A mugger was caught out after taking a photo of himself on a stolen i-phone and e-mailing it to his own account.
The woman whose i-phone he stole saw the picture in her outbox on her home computer and sent it to police.
They compared it to mug shots they had, and discovered it was Daquan Mathis, 18, who was wanted for armed robbery.
The phone was stolen from Sayaka Fukuda as she stood on a subway platform in New York in the early hours of 21 February 2008.
The New York Post reported that Fukada reported the theft to police, went home, and found the picture in her outbox after Mathis used the phone to e-mail his self portrait to himself.
He was arrested last Thursday and charged with robbery and grand larceny.