TMZ reports that Justin Bieber filed a $20million lawsuit against the women that accused of sexual assault. 
His lawyer called the accusations against him as "factually impossible, and disproven both by indisputable documentary evidence and the individual's own admissions."

One of the ladies who goes by @danielleglvn posted that she was sexually assaulted by Justin Bieber in March 2014 in Four seasons hotel.
Justin then took his Twitter to clear the air, saying he doesn't take such accusations lightly, he then posted pictures and hotel receipts that show he wasn't in Four seasons hotel on the night host accusers alleged but rather was in Airbnb on March 9 2014 and in Austin on March 10 2014 with his then girlfriend Selena Gomez. He also tweeted, He tweeted;

"Rumors are rumors but sexual abuse is something I don’t take lightly.  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.

"Every claim of sexual abuse should be taken very seriously and this is why my response was needed. However this story is factually impossible and that is why I will be working with twitter and authorities to take legal action."

Justin and his team are suing for defamation and damges.