HONOLULU (AP) — A 19-year-old mastermind of armed robberies at a recycling center and three Oahu banks used part of the nearly $41,000 stolen on dental work, according to an FBI affidavit filed in federal court.

Marcus Kalani Watson, also known as Kiki Seui, pointed a pistol at the chest of a Reynolds Recycling worker and threatened to shoot him after the worker threw cash on the ground during the April 22 robbery, court documents show an informant told the FBI.