Retired Chicago Bulls player Scottie Pippen allegedly knocked out a man in Malibu last night and is officially a suspect in a felony assault with a deadly weapon investigation .

47-year-old Pippen was at Nobu when he got into a fight with a 50-something year old man outside the restaurant, and allegedly knocked him out with a punch to the face.

Allegedly Pippen repeatedly kicked the Â victim when he was down.Â According to witnesses, the fight started after the man approached Pippen for an autograph.