Los Angeles police said Thursday that the 28-year-old Lewis is the only suspect in the death of 81-year-old Catherine Davis, who was discovered slain inside the hillside home in Los Feliz.
Authorities say they are investigating Davis’ death and that it appears she was beaten. They say the actor died Wednesday after climbing atop the home and either jumping or falling to the ground.
Lewis played Kip "Half-Sack" Epps in the FX show.
According to records, Lewis pleaded no contest to assault with a deadly weapon and attempted burglary this year.
He spent time at a drug- and psychiatric-treatment center, and he was released from county jail Sept. 21.
Lewis’ attorney Jonathan Mandel said Thursday he was "surprised" and "baffled" by the deaths.
Mandel declined to immediately comment on Lewis’s criminal history or possible drug problems pending consideration of client confidentiality requirements.
Before Lewis was discovered Wednesday morning, neighbors reported hearing a woman screaming in the home, said Los Angeles Police Cmdr. Andrew Smith.
Neighbors also told authorities that a man had jumped a fence, assaulted a painter and homeowner next door and jumped back.
It’s unclear whether drugs or alcohol were involved, Smith said.
Lewis had a career spanning more than a decade, mainly in small roles. He played Ricky in the 2007 movie "AVPR: Aliens vs Predator — Requiem" and was Dennis ‘Chili’ Childress for two seasons on TV’s "The O.C."
His role in "Sons of Anarchy" came in 2008 and 2009.
AP Entertainment Writer Anthony McCartney in Los Angeles contributed to this report.