In a new interview, Dr. Drew says that Adam Goldstein’s (DJ AM) renewed drug addiction was fueled by pain killers. Up until last year, Adam had been sober for over 11 years.

Nearly a year ago, he and Blink-182 drummer Travis Barker were the only two survivors of a plane crash in South Carolina. On Saturday, Barker, who is currently on tour, took to his Twitter account, writing three separate posts: “Don’t know how i am gonna play 2night but i am for AM. My brother is gone. i love u and miss u, i’ll never forget all the good times we had,” then, “I’ll never forget everything we’ve been thru and every time i play the drums i’ll think of you. U were an amazing friend/DJ/human being.” Minutes later, he added, “Rest In Peace my brother, this really f—s me up.”

DJ AM even had his last message for friends and fans. His last tweet was August 25th:  “New york, new york. Big city of dreams, but everything in new york aint always what it seems.” The tweet is a foreboding lyric from Grandmaster Flash’s song “New York, New York.”

Thoughts and prayers go out to his family. May he rest in peace.