In April, police were called to Ian Long’s home in Newbury Park after neighbors heard loud crashes coming from inside the house he shared with his mother Colleen.

She lived ‘in fear’ of him, the neighbors said, adding that Long, who friends have described as ‘cocky’, was ‘hell to live with.’

The neighbors already suspected that he was suffering from PTSD after returning from a tour of Afghanistan between 2010 and 2011 and say he was disrespectful and rude whenever he passed them in the street.

When police arrived at the home, they called in mental health specialists to help resolve the situation and, according to The Wall Street Journal, it took hours for them to get Long out of the house.