Johnny Lewis, the former co-star of FX show Sons of Anarchy for two seasons and an actor on other shows including The O.C., as well as the fomer boyfriend of Katy Perry, was found dead last Wednesday outside of a Los Angeles home after either falling or jumping off the roof. He was 28 years old.

Police authorities are declaring Johnny a suspect in the gruesome murder of 81-year-old Catherine Davis, who he was renting a room from, in the minutes before his fatal fall. The LAPD and coroner have confirmed Catherine died of "blunt force trauma and manual strangulation," according to E! Online. TMZ is also reporting that he allegedly beat and dismembered her cat with his bare hands. Johnny was seen fighting with neighbors outside the home afterwards, then spotted climbing up on the roof and later found dead on the driveway. It's unclear if drugs played a role, but it's suspected Johnny was allegedly on PCP or meth.

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Johnny had numerous run-ins with the law throughout 2012. He was arrested three times in the first two months of the year on charges including assault and battery, felony burglary and felony assault with a deadly weapon, and did not appear for several of his court dates. He began serving jail time in April and also had a stint at a mental health facility before being released on September 21, five days before his death.

"It was a tragic end for an extremely talented guy, who unfortunately had lost his way," said Sons of Anarchy boss Kurt Sutter in a statement online. "i wish i could say that i was shocked by the events last night, but i was not. i am deeply sorry that an innocent life had to be thrown into his destructive path. yes, it's day or mourning, but it's also a day of awareness and gratitude. sadly, some of us carry the message by dying." Our condolences go out to all those affected by this.

Photos courtesy of Getty Images and FX