Gavin DeGraw on Attack: 'I Don't Remember Much' Mystery surrounds Monday morning assault By Evann Gastaldo, Newser Staff Posted Aug 10, 2011 9:06 AM CDT 1 comment Comments Singer Gavin DeGraw arrives at the BMI 57th Annual Pop Awards in Beverly Hills, Calif. on Tuesday, May 19, 2009. (AP Photo/Dan Steinberg) (Newser) – Gavin DeGraw was released from the hospital yesterday after suffering a concussion, broken nose, black eyes, cuts, and bruises in a Monday morning assault. "Hi my friends. Honestly, I don't remember much," he posted—in a tweet his rep confirms to E! was by DeGraw himself. "I only know I can recover from here. Thank u all for your genuine concern. I love u guys." Police are still investigating the 4am attack, but as of yet, both suspects and a motive are unknown. "Some kind of argument" broke out between DeGraw and the group of men who beat him, a police source tells People; DeGraw told police there were at least three assailants but he "can't clearly recall" what they fought about. Police sources say that's due to both his head injuries and the fact that he could have been drunk at the time. The New York Daily News reports DeGraw had been out drinking with friends, but it's still not clear what he was doing alone on the streets at the time of the incident. He has canceled his performances through Saturday.