The one time boyfriend of Katy Perry, that being 28-year-old Sons of Anarchy's Johnny Lewis (who most recently starred alongside Kristen Stewart in The Runaways), was found dead in LA on Wednesday "after a fall." It has since transpired that he may also have been responsible for beating his 81-year-old landlady to death.

MTV reports: "Officers were called to the property in the Los Feliz area of LA after responding to reports of a woman screaming, and 81-year old Catherine Chabot Davis' body was later discovered inside the house. Lewis was found dead in the driveway of the pad."

LAPD Commander Andrew Smith told ABC News affiliate KABC: "It's a terrible tragedy as far as we're concerned and we're digging into the bottom of it. He appeared to have died from some type of fall, either from the stairway, or from the balcony, or from one of the roofs. The best we're piecing together now is that it appears that some type of altercation occurred inside of the house resulting in the death of the woman... Then this individual ran outside, had an altercation with a couple of neighbours, ran back into the house and, by the time we got here, he had fallen or had somehow died on the driveway."

Friends of Perry, who dated Lewis in 2006 for a year-and-a-half, said "She is devastated. She had to separate from him to get ahead and focus on her career. He was in trouble then and she couldn't help him. A lot of her songs were partially inspired by him. I know The One That Got Away and Circle the Drain are partly about him, as well as Travis McCoy. But she was young and it was a time in her life she cherishes."

>Nikki Reed shocked by Johnny Lewis' death.