A Philadelphia teenager turned himself into police after his self-portrait was captured on a cell phone he's accused of stealing during an armed robbery.

Cook turned himself after this self-portrait was sent to police

The incriminating photo showed 18-year-old Kadeem Cook holding a large handgun to his head, according to news reports. The phone had been programmed to zap pictures to its owner's home computer.

The phone and other belongings were allegedly stolen at gunpoint from a 20-year-old woman. Sometime after that, she received the photo and turned it over to police. Cook turned himself in after the photo was splashed across numerous television and newspaper reports.

"We really appreciate him taking a picture of himself," a police spokesman said. Stories are here and here. ®