Katy Perry's Ex Boyfriend Johnny Lewis Found DeadJohnny Lewis pictured at the 36th Toronto International Film Festival in Sept. 2011.
An actor in the series 'Sons of Anarchy' went on a bizarre rampage Wednesday that ended with the death of his elderly landlady and his own fatal fall from a roof in a Los Angeles neighborhood, sources said.

Investigators are looking at drugs as a possible motive, a source told the Daily News.

Officers responding to calls of a 'screaming woman' in an upscale section of Los Feliz discovered Johnny Lewis, 28, sprawled in a driveway after apparently falling or jumping to his death from the structure Wednesday morning, police said.

Lewis previously dated singer Katy Perry. He got out of jail Sept. 21 after spending about six weeks behind bars for assault with a deadly weapon, a law enforcement source told The News.

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He also pleaded no contest to first degree burglary earlier this year and received 291 days in jail plus three years probation for that felony, the source said.