Stephon Marbury reacted angrily Friday to questions about a New York City police investigation into the shooting of a rapper outside the club where Marbury's cousin, Sebastian Telfair, had a $50,000 chain stolen.

Celtics point guard Telfair, 21, had the chain ripped from his neck Monday night outside Justin's, an East 22nd Street club owned by hip-hop artist Sean "Diddy" Combs.

When asked about his cousin after practice Friday, Marbury said brusquely, "He'll be fine." Asked if he's concerned for him, Marbury went off.

"That's my little cousin," Marbury said. "That's a stupid question." But during his brief rant, which quickly ended the interview, he asserted that Telfair had been robbed at gunpoint - a detail that has not been reported.

"Somebody put a gun to him," Marbury said. "If somebody put a gun to one of your family members, wouldn't you be concerned?"