2.55pm: A man shot during the attack at the Inland Regional Center in San Bernardino managed to call his wife of two weeks to reassure her.
Kevin Ortiz was shot twice in the leg and once in the shoulder. Despite being badly injured he managed to call his new bridge Dyana, 23, and his father to tell them he was alive.
"Kevin said he had been shot three times and that he was in pain but he was all right," Mrs Ortiz told the LA Times.
"Then he said 'I love you' and I said 'I love you.'"
Mr Ottiz, a county environmental inspector, made the call at 11:25 a.m.
He then called his father Carlos Ortiz.
"Kevin called me immediately after he got shot and said, 'I've been shot three times, Dad. I'm in pain. Don't worry. There's a policeman with me'," he told the LA Times.
2.44pm: San Bernardino police chief Jarrod Burguan is now addressing reporters at a live news conference in San Bernardino.
He said two suspects, a man and a woman, were killed in a shootout with police.
He also said "an explosive device" was found in one of the buildings.
The suspects were dressed in "assault-style" clothing and armed with assault rifles and hand guns.
Officials will not say if the attack was "terrorism".
The FBI was assisting with investigations.
A third suspect was seen running away, and was detained. "We are not sure if they were involved," said Mr Burguan.
In response to questions about the shooting happening after a holiday party or meeting at the centre, Mr Burguan said:
"I have heard that they were in a meeting or a holiday-type party event. A person did leave and there was some sort of dispute but we have no idea if that was the people that came back."
The identities of the suspects were not yet known. Mr Burguan said he did not know the ethnicity of the suspects.
2.32pm: At a live news conference in San Bernardino, Loma Linda University Medical Centre public information officer Briana Pastorino said five adult patients were taken to the hospital following the shooting.
"Of those five, two are critical but stable, two are fair and one is still being assessed. All five remain in the hospital."
She said the hospital and university campus were put on alert after a bomb threat was received.
The threat was later deemed not credible.
The hospital was not on alert for any extra patients, she said.
"We are all shaken by this, we are bothered by it and I think that we should all go home tonight to our loved ones and just understand that this could happen at any time."
Staff were working to make sure the victims "could return home to their families," she said.
"We are treating these people that didn't need to get hurt today."
Sirens were audible in the background of the news conference.
2.27pm: The New York Times is reporting that investigators believe there were three gunmen and one of them had worked at the facility and recently had a dispute with fellow employees, according to law enforcement officials.
"A witness has told police that although the gunmen had their faces covered, one of them sounded and appeared very similar to an employee who had left the facility earlier in the day," the Timesr reported.
2.19pm: Police are serving a search warrant on a home in Redlands, California, in connection with the deadly shooting at a social services facility in neighboring San Bernardino.
City spokesman Carl Baker says Redlands police are assisting San Bernardino police in the search connected to the Wednesday morning shooting that killed at least 14 people and wounded more than a dozen others.
An Associated Press reporter watched as a half-dozen vehicles carrying helmeted police drove into the area. One officer carrying an assault rifle ordered reporters to clear the area, and an armored vehicle parked outside a row of homes.
The action followed a gunbattle between occupants of an SUV and San Bernardino police not far from the original shooting scene.
2.02pm: DISPUTE AT PARTY MAY HAVE SPARKED SHOOTINGS
A senior federal officer has told the LA Times that a dispute at a holiday gathering at the centre may have sparked the mass shooting.
The unnamed official who is said to be monitoring the incident, said authorities believed "one of the shooters left the party after getting into an argument and returned with one or two armed companions".
The shooting took place in a large conference room on the grounds of the Inland Regional Center. It had been privately hired for a group function.
1.58pm: These numbers show the scale of the gun control problem in the US. The FBI processed two firearm background checks per second on Black Friday, the biggest shopping day in the US, last week.
The agency ran a record 185,345 background checks on Black Friday, about 5 per cent more than the amount processed through the National Instant Criminal Background Check System on that day in 2014.
The figure that is seen as a strong indicator of how many guns were sold.
However, about 40 percent of all gun sales are through unlicensed sellers in America, so it is likely that figure probably underestimated how many firearms actually changed hands, Johns Hopkins Centre for Gun Policy and Research co-director Jon Vernick says.
1.48pm: San Bernardino police chief Jarrod Burguan is expected to hold another press conference soon. We'll have live updates here.
1.38pm: The San Bernardino County Department of Public Health has confirmed that several of its employees were inside a social services facility when gunmen opened fire.
The department says on a verified county Twitter account that it's not releasing any more information because of the ongoing investigation and out of respect for the victims.
Authorities say the shooting killed at least 14 people and wounded more than a dozen others at the Inland Regional Center in San Bernardino.
The health department says it will be providing services to its employees and their families.
Sheela Stark, of the Inland Regional Center, says the centre has two large buildings that require a badge to get in.
However, the conference room where many public events take place - including a banquet that was taking place during the shooting - was usually left open when they were expecting visitors.
Marybeth Feild, the president and CEO of the centre, said the shooting happened in a conference area where the San Bernardino County Department of Public Health was having a banquet. The centre employs more than 600 people.
1.25pm: San Bernardino police have confirmed that one suspect was killed during the shoot-out. Another is in custody after trying to flee while the third was wounded and captured in the SUV.
But it is unclear how many more suspects or people connected with the shooting police are looking for.
One police officer was also shot but police say his injury "is not life threatening".
1.20pm: While police carry on work at the scene of the initial shooting and the pursuit other teams are still involved in a stand off at a residential property.
SWAT and police teams are the house on Gould St, not far from where the pursuit ended.
Earlier police went to a private radio channel to organise units to go to a residential address believed to be connected to the suspects.
They did not want address made public at the time. However since then photographs of armed and bulletproof-vested officers at the house have appeared on news sites and on social media.
1.08pm: Police have confirmed that all suspects in the high-speed chase are either wounded or in custody.
"We have spoken to all units involved in the pursuit. We have accounted for all of the bodies that were in the vehicle," an officer told the dispatcher on the police radio.
1.00pm:CNN have just posted this moving photo of people praying just across the street from the scene of the shooting:
12.56pm: More on the shoot-out after the high-speed chase:
The officer injured in the shoot-out has been taken to hospital. He has gunshot wounds but it is unclear how badly injured he is or how many times he was shot.
A suspect has been seen on the second level of a building. Police are going into the building and hoping to flush him out.
A body now appears to be lying next to the SUV the suspects were travelling in.
Armed police are examining the vehicle. Road blocks are still in place and other units are chasing the remaining suspect.
It has been reported that all suspects have either been shot or arrested but cops are still on the hunt for one person.
12.54pm: The Twitter account of Democratic presidential candidate Bernie Sanders has posted a message about the shootings.
"Mass shootings are becoming an almost-everyday occurrence in this country. This sickening and senseless gun violence must stop."
12.38pm: POLICE CHASE SUMMARY
• Police say multiple shots were fired after a high-speed chase involving a dark-colored SUV.
• It appears two suspects have been shot and a third is in custody. One of the injured suspects is "still breathing" and was found with an assault rifle strapped to his chest.
• A police officer was also shot.
• As units pursued the suspects' vehicle one of the men fired at them from the back window.
• A pipe bomb was found on San Bernadino Ave which runs parallel to Almond Ave. Police there are clearing the street.
12.35pm: The San Bernardino County Sheriff's Department has just tweeted that the number of wounded has risen from 14 to 17. The number of dead remains at 14.
12.25pm: BREAKING - HIGH-SPEED CHASE
A police officer appears to have been shot during the pursuit. Other officers are moving towards the car to "check on the bodies". "Be prepared," he has warned all units.
Another suspect has been located on Almond Ave and is said to be in custody.
"There's a dude in the back seat... laying flat on his back... looks like he's still breathing. He's got and assault rifle strapped to his chest," a cop said over the radio.
Meanwhile a pipe bomb has been found near where the pursuit ended.
12.16pm: BREAKING - HIGH-SPEED CHASE
Police are calling for a "bear cat" - an armoured utility vehicle - to join the pursuit. A police chopper has also joined and an officer is positioned in the back with a rifle.
Police officers can be heard shouting at each other in the background of the radio. Gun shots can be heard and one officer is screaming "hold your fire".
Police are frantically trying to clear traffic from the area.
The "suspect vehcile" has stopped. "Right now we have one down outside the car, one down inside the car and from what we understand one's on the run."
12.08pm: BREAKING - HIGH-SPEED CHASE
Cops are pursuing a man in a vehicle who is travelling at high speed. It is unknown if the vehicle is related to the shooting but it is a dark-coloured Chevy truck, similar to a dark SUV one of the gunmen was seen fleeing the scene in.
Shots have been fired at police out the back window of the truck.
Police pursuing the truck have confirmed to dispatchers that shots have been fired at officers.
"Multiple shots fire," an officer has shouted into the scanner.
"We need medical aid."
12.08pm: Police are still chasing up possible sightings of the shooters. Officers are currently converging on a black SUV with Utah state licence plates parked in an area of San Bernadino. Three men were earlier seen in the truck, described as being brand new - either a 2014 or 2015 model.
12.07pm: This is just a heartbreaking tweet:
12.05pm: This graph will show you the extent of the United States' gun problem:
12.00pm: MAP: Where the shootings took place
11.57am: The shootings will once again bring the issue of gun to the fore in America. Shockingly, though, California has some of the most restrictive gun laws in the United States.
According to the California State Law Summary, all gun sales must be processed through licensed dealers requiring a background check, all gun dealers must obtain a state license in order to sell firearms, and most assault weapons are banned. The state maintains a permanent record of firearm sales and was the first state to require handgun microchipping.
In 2013, California had the lowest number of gun deaths across the United States. These moves to regulate came after an epidemic of handgun violence in the 1980s and 1990s.
11.55am:The BBC has just started their report on the San Bernardino shootings by saying: "Just another day in the United States of America..."
11.42am: Lieutenant Rich Lawhead, of the San Bernardino Police, said officers would go through the centre and events "very methodically" as part of the investigation. "We're still trying to talk to a number of eye witnesses," he told CNN.
There were lots of rumours around, but police were yet to confirm a lot of the information yet, he said.
Meanwhile, police have set up a destination for family memebers to reunited with relatives trapped inside the Regional Center and then evacuated by school bus.
