Travis Barker Will "Never Forget" His "Brother" DJ AM

Some might have never heard of DJ AM but he was a well known celebrity DJ. DJ AM, the sought-after disc jockey who became a celebrity in his own right with high-profile romances with Nicole Ritchie and Mandy Moore just to name a few and a glamorous lifestyle. AM survived a plane crash just months ago, was found dead in his apartment Friday. He had a history of drug problems.

UPDATE: Blink-182 paid a tearful tribute to their late friend during an encore at their Saturday night concert, E! News confirms. Where Barker would normally perform a drum solo, the band held an onstage vigil while all of the lights in the arena were turned off.

His Ex-girlfriend Mandy More also grief stricken:

"I am absolutely heartbroken," Moore said in a statement "To say that he will be missed beyond words is an understatement. My heart goes out to his loved ones."

After forming an unimaginable bond over their survival of the harrowing plane crash that claimed the lives of four people last September, Travis Barker is speaking about his grief over losing his close friend, DJ AM.

"Rest In Peace my brother, this really f---s me up," Barker tweeted earlier this evening. "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."

"Don't know how i am gonna play 2night but i am for AM," read Barker's emotion-filled tweet. "My brother is gone.i love u and miss u, I'll never forget all the good times we had."

Authorities will need to conduct toxicology tests, expected to take weeks, to determine what killed celebrity disc jockey DJ AM, a medical examiner's office spokeswoman said Saturday.

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