Three of the people involved in a double fatal crash in Christchurch on Saturday night were brothers.
Mark Nicholl Junior was killed and his brothers Jayden and Shanan were injured when a ute and car collided on Halswell Junction Rd near the intersection of Shands Rd at around 7.40pm.
A second man, a friend of the trio, also died.
The two occupants of the ute were transported to hospital with moderate injuries.
His partner's mother posted that the situation was "every parent's worst nightmare" to get a phone call about a crash from police.
"But to have three of your children in one crash - I'm lost for words," she said.
She said her heart was breaking and she could feel her daughter's pain.
"Life isn't fair, it really sucks... but you are not alone with those two boys... (the victim) will watch over his sons every day and night... my heart breaks for us all."
She said she had known her late son-in-law for 27 years and he had always been "like family".
"You will be truly missed," she wrote.
Jayden and Shanan Nicholl were rushed to hospital.
Jayden Nicholl's partner said he was "very sore and battered but he is ok".
She said the crash was a "nightmare" and now the family were desperate for Shanan Nicholl to pull through.
His partner has posted photographs of him in hospital where he is in an induced coma.
The photographs show some injuries and various tubes and lines going into his body.
"He is stable but he has a lot of operations to pull through," she wrote.
"He has just come out of theatre and he soldiered through like the real champ he is.
"He isn't breathing on his own and the doctors still have no certainty of what condition his brain is in or how long they need to keep him sleeping but for now he is peaceful and comfortable and that's all that matters for the time being.
"They are not going to attempt to wake him for at least four days as his body needs all the rest it can get."
She said the family were "going through an unbearable pain".
It is the second crash with multiple deaths in the region in recent weeks.
Timaru teenagers Javarney Wayne Drummond, 15, Niko William Hill, 15, Jack Wallace, 16, Joseff McCarthy, 16 and Andrew Goodger, 15 were all killed when the Nissan Bluebird they were passengers in smashed into a concrete power pole near Timaru on August 6.