The ex-wife of the Orlando nightclub gunman

The ex-wife of the Orlando nightclub gunman says he was "mentally unstable and mentally ill."

Sitora Yusifiy, speaking to reporters in Boulder, Colorado, says Omar Mateen was bipolar and also had a history with steroids.

She says that in the four months they were together he cut her off from her family and regularly beat her. She says that her family visited her and saw she wasn't OK and rescued her from the situation.

Yusifiy says they literally pulled her out of his arms. She says she left all her belongings and has had no contact with him for seven or eight years.

She says Mateen was religious, but she saw no signs of radicalism.

Of the nightclub massacre she says, "there was no sign of any of this at all."

While the FBI has not identified Mateen publicly, U.S. law enforcement officials said his identification was found on the body of the suspected killer who was armed with a handgun and an assault rifle.

Authorities believed he used those weapons to kill 50 people and injure dozens more in the attack on the gay nightclub club that began just after 2 a.m. Sunday morning. Mateen was killed in shootout with police three hours later after a SWAT team assaulted a section of the club where Mateen was holed up with hostages.

Mateen's ex-wife said his family was from Afghanistan, but her ex-husband was born in New York. His family later moved to Florida. In a series of Myspace photos, Mateen is seen taking selfies and wearing NYPD shirts in a couple of the shots. His ex-wife identified him as the man in the Myspace photos.

Mateen's ex-wife said she was having a difficult time when she first met him and decided to move to Florida to be with him. The two married in March 2009 and moved into a 2-bedroom condominium in Fort Pierce, Fla., that Mateen's family owned.

"He seemed like a normal human being," she said, adding that he wasn't very religious and worked out at the gym out often. She said in the few months they were married he gave no signs of having fallen under the sway of radical Islam. She said he owned a small-caliber handgun and worked as a guard at a nearby facility for juvenile delinquents.