A statement from his publicist read: “Gavin DeGraw is currently recovering and in stable condition at Bellevue Hospital where he was taken late Sunday night by ambulance after he was attacked by a group of assailants."
He wrote on twitter: "Hi my friends. Honestly, I don't remember much. I only know I can recover from here. Thank u all for your genuine concern. I love u guys. (sic)"
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A statement from his publicist revealed police are currently investigating the assault and added that Gavin would cancel some planned tour dates this week.
It said: "He suffers from a concussion, broken nose, black eyes, cuts and bruises. The police are conducting an investigation of the attack.
"Gavin and his family appreciate everyone's concern at this time.
"As a result of Gavin's injuries, he won't be performing in Wantagh, New York, on August 12 or Mansfield, Massachusetts, on August 13."