The actor Johnny Lewis was neither drunk nor under to the influence of drugs when he fell to his death, back in September.

The 28 year-old was best known for playing the role of Kip Epps in Sons of Anarchy. He dated the pop singer Katy Perry for around 18 months from 2006. On the day that he passed away, he is thought to have killed his elderly landlady and died in an attempt to flee her home, BBC report.

According to the autopsy, there were no drugs or alcohol in his system. Nail marks and signs of strangulation were found on his neck. Earlier this year, Lewis, who had a criminal record, was treated for psychiatric issues and for substance abuse issues. Police believe that Lewis killed his 81 year-old landlady before falling to his death, on the driveway of the property. The death has been ruled as accidental, as police cannot ascertain that he was pushed, or that he jumped deliberately. In the months prior to his death, Johnny had been arrested three times and a probationary report states that officers were “very concerned for the well-being of not only the community but that of the defendant.”

When the incident occurred, neighbours reported hearing a woman screaming, and seeing a man jumping a fence, assaulting a painter and a homeowner and then jumping back over the fence. Lewis was later found dead outside the property, having fallen there from a considerable height.