"During the entirety of our relationship, Johnny has been verbally and physically abusive to me," Heard, 30, alleges in court documents obtained by ET. "I endured excessive emotional, verbal and physical abuse from Johnny, which has included angry, hostile, humiliating and threatening assaults to me whenever I questioned his authority or disagreed with him."
She also claims in the filing that the 52-year-old actor has issues with drugs and alcohol.
"Johnny has a long-held and widely-acknowledged public and private history of drug and alcohol abuse. He has a short fuse," the petition states. "He is often paranoid and his temper is exceptionally scary for me as it has proven many times to be physically dangerous and/or life threatening to me."
"Johnny['s] relationship with reality oscillates, depending upon his interaction with alcohol and drugs," it continues. "As Johnny's paranoia, delusions and aggression increased throughout our relationship, so has my awareness of his continued substance abuse."
In the court documents, Heard says the latest physical confrontation happened this past Saturday, alleging that Depp threw a cell phone at her, causing a bruise near her eye. The documents claim the two were having a "peaceful conversation" about his mother's recent death, before he allegedly "began obsessing about something that was untrue and his demeanor changed dramatically."
"He was inebriated and high," Heard claims in the filing.
After, the papers say, Depp demanded they call their mutual friend, photographer iO Tillet Wright. Heard claims in the filing that Depp ripped the cell phone out of her hands and began yelling obscenities at Wright, which is when Wright allegedly yelled for Heard to get out of the house. Heard says she yelled at Wright to "call 911."
"Johnny then grabbed the cell phone, wound up his arm like a baseball pitcher and threw the cell phone at me striking my cheek and eye with great force," Heard claims. "He then forceably pulled back my hair as I attempted to stand from the sofa ... Johnny continued screaming at me, pulling my hair, striking me and violently grabbing my face."
Heard alleged the fight was eventually broken up when a female friend entered the condominium, using a key she had previously given her.
The Los Angeles Police Department told ET on Friday that the New York Police Department did receive a third party call on Saturday that Heard was involved in a domestic dispute, and responded to the incident. However, they say the LAPD found no evidence of a crime, and that Heard claimed it was only a verbal dispute at the time. They also say that Depp wasn't present at the residence, and that Heard refused to name him.
Multiple sources close to Heard tell ET that the reported incident was not the first time Depp has allegedly been violent in the relationship.
In the court documents filed on Friday, Heard says she is "extremely afraid" of Depp and for her safety.
"I live in fear that Johnny will return to the residence unannounced to terrorize me, physically and emotionally," the documents state.
According to documents filed by Depp's attorney, Laura Wasser, Depp is currently out of the country for work and has not heard the allegations against him. Depp's new movie, Alice Through the Looking Glass, opens in theaters on Friday.
"He nonetheless has every intention of staying away from Amber and will stipulate to mutual stay-away and personal conduct orders," Wasser writes.
A Los Angeles judge partially granted Heard a restraining order against Depp on Friday, although her request to keep Depp away from one of their dogs, Pistol, was denied. The next hearing is scheduled for June 17th.
Heard filed for divorce from Depp on Monday after one year of marriage -- and three days after Depp's mother died -- citing irreconcilable differences and asking for spousal support. She stayed silent as she walked out of court on Friday, appearing to have a bruise near her right eye.