"I don't normally address things as I have dealt with random accusations my entire career but after talking with my wife and team I have decided to speak up on an issue tonight," wrote Bieber, who married model Hailey Baldwin last year.
"Rumors are rumors but sexual abuse is something I don't take lightly. I wanted to speak out right away but out of respect to so many victims who deal with these issues daily I wanted to make sure I gathered the facts before I made any statement."
"In the past 24 hours a new Twitter appeared that told a story of myself involved with sexual abuse on March 9, 2014 in Austin Texas at the Four seasons hotel. I want to be clear. There is no truth to this story. In fact as I will soon show I was never present at that location."
"As her story told I did surprise a crowd in Austin at Sxsw where I appeared on stage with my then assistant side stage and sang a few songs. What this person did not know was that I attended that show with my then gf Selena Gomez," he wrote, before sharing photos and screenshots that he says debunk his accuser's claims:
"Furthermore I stayed with Selena and our friends at an airbnb on the 9th and on the 10th stayed at a Westin because our hotel reservation at LÀ Quinta and not the four seasons was messed up. Here are the receipts for the hotel on the 10th."
Bieber's tweets are in response to a woman named Danielle who claimed she was led to Bieber's hotel room in Texas after a concert held by Scooter Braun in 2014, where he allegedly "forced himself inside her" despite her asking him to stop several times.
Responding to the post, another woman, Kadi, alleged she'd also had an unwanted sexual encounter with the singer in his hotel room the following year in New York City.
"I'm posting this anonymously because I'm not ready to come forward and reveal myself," Danielle wrote.
She said she met the pop juggernaut at a concert in Texas in 2014, when she was 21, after being plucked from the audience by a member of Bieber's entourage.
Bieber, then 20, was in a very public relationship with singer Selena Gomez at the time.
"Justin and some other man, who appeared to be his friend, then invited us over to the Four Seasons Hotel," Danielle recalled, claiming Bieber took her to his room and kissed her, before unbuttoning her pants.
"I kept asking myself 'What about Selena?', 'Did I consent to this?', 'How will she react if she finds out?', 'Where are my friends?'," she said, adding that she asked him to stop so she could find her friends.
He allegedly did not comply.
"He then pulled my underwear down, unbuckled his pants, pulled his underwear down, grabbed the bed covers and threw it over us … I was very uncomfortable, and I started to feel myself hyperventilate."
"I told him to get off because I was starting to worry about my friends, but it was too late. He forced himself inside me before I got the last few words out," she said, revealing that she kept quiet about the alleged incident until last year.
"Fast forward to late last year and I finally decided to speak up about it.
"If you've ever been a victim of sexual assault, I believe you … Just because he is a huge pop star with a lot of money and millions of fans, doesn't make this ok and cannot go unnoticed," she concluded.
The singer was in Austin on March 9, 2014, and performed at Banger's Sausage House and Beer Garden, where Danielle said she met the star.
But Allison Kaye, president of Bieber's manager Scooter Braun's SB Projects, called Danielle's story "factually impossible" in a message to a fan shared on Twitter. She claimed Bieber had in fact stayed in an Airbnb, not the Four Seasons hotel.
Shortly after sharing her tweet, another woman, Kadi, spoke up about an alleged meeting with the star.
Kadi, an Instagram influencer with 214,000 followers, said she met Bieber in New York City in 2015 after a bodyguard approached her outside his hotel, where she had been waiting to get a photo of the star "just like any other Beliebers when he was in New York."
Kadi said she was led to Bieber's hotel room, where he allegedly kissed her without consent, followed her to the bathroom, locked the door, and forced himself upon her. She said she had to "kick him between the legs" to escape.
"He pinned me down pulled my leggings down and his shorts and penetrated me," she alleged.
"I pushed him and kicked him between his legs and ran out to the living room."
She went on to say the experience left her feeling suicidal, and she "went to rehab for mental treatment".
She also said she had "decided to go to the law enforcement" about the incident.
Where to get help:
• Lifeline: 0800 543 354 (available 24/7)
• Suicide Crisis Helpline: 0508 828 865 (0508 TAUTOKO) (available 24/7)
• Youth services: (06) 3555 906
• Youthline: 0800 376 633
• Kidsline: 0800 543 754 (available 24/7)
• Whatsup: 0800 942 8787 (1pm to 11pm)
• Depression helpline: 0800 111 757 (available 24/7)
• Rainbow Youth: (09) 376 4155
• CASPER Suicide Prevention
If it is an emergency and you feel like you or someone else is at risk, call 111.
If you're in danger now:
• Phone the police on 111 or ask neighbours or friends to ring for you.
• Run outside and head for where there are other people.
• Scream for help so that your neighbours can hear you.
• Take the children with you.
• Don't stop to get anything else.
• If you are being abused, remember it's not your fault. Violence is never okay.
Where to go for help or more information:
• Women's Refuge: Free national crisis line operates 24/7 - 0800 refuge or 0800 733 843 www.womensrefuge.org.nz
• Shine, free national helpline 9am-11pm every day - 0508 744 633 www.2shine.org.nz
• It's Not Ok: Information line 0800 456 450 www.areyouok.org.nz
• Shakti: Providing specialist cultural services for African, Asian and Middle Eastern women and their children. Crisis line 24/7 0800 742 584
• Ministry of Justice: www.justice.govt.nz/family-justice/domestic-violence
• National Network of Stopping Violence: www.nnsvs.org.nz
• White Ribbon: Aiming to eliminate men's violence towards women, focusing this year on sexual violence and the issue of consent. http://www.whiteribbon.org.nz