Sons of Anarchy Actor Johnny Lewis Kills Woman, Dies in a Fall: Cops

By Howard Breuer

09/27/2012 at 01:00 PM EDT

Johnny Lewis

Todd Williamson/WireImage

Sons of Anarchy actor Johnny Lewis fell to his death from a building in Los Angeles – moments after he allegedly beat his landlady, an 81-year-old woman, to death, authorities say.

Lewis, 28, who played Kip "Half-Sack" Epps on the FX show and who once dated Katy Perry, was found lying in a driveway in the Los Feliz neighborhood near Hollywood on Wednesday, while a woman identified as Catherine Davis was found dead of apparently blunt force trauma inside the building.

The upstairs part of the building had been ransacked. Police also found the body of a cat that had apparently been beaten.

"It’s a terrible tragedy as far as we’re concerned and were digging into the bottom of it," LAPD spokesman Andrew Smith tells PEOPLE.

Officers responding to a 911 call of a woman screaming were told that Lewis had fought with two men – it wasn't clear if this was before or after the landlady was killed – and that Lewis died after a fall, possibly from a wall or balcony, according to police.

Detectives have concluded that Lewis killed Davis, and they are not looking for any other suspects, says Smith. There was no immediate indication of what the motive for the murder was.

Lewis, who also appeared on shows including The O.C., Criminal Minds, Bones and CSI, dated Perry in 2006.