Chikezie Eze was at Neiman Marcus in Beverly Hills when he allegedly tried to use "fraudulent means" -- possibly a phony check or credit card -- to purchase merchandise.
Chikezie was detained by store security until the Beverly Hills cops arrived. The singer was then taken to Bev Hills jail and booked on felony identity theft.
He is currently in jail, where he's being held on $50,000 bail.
UPDATE: We're told Chikezie was busted at the counter of Neiman Marcus with items he was trying to purchase.
UPDATE: Chikezie bailed out.
UPDATE: A rep for Neiman Marcus tells TMZ, "We're cooperating with local authorities."