Christopher Piantedosi, 38, of Burlington, Mass., called Plaistow police on Thursday and told them he was the man who stole a purse from a 61-year-old woman in a Market Basket on July 18, police said. He turned himself in to police on Tuesday.
Police said overwhelming media exposure may have led to Piantedosi's arrest.
"You can classify that as his 15 minutes, or 15 seconds, of fame. He felt the pressure that he needed to turn himself in, because it was only a matter of time (before he was arrested)," said Lt. William Baldwin, of Plaistow police.
Police said the victim's GPS, a new cord for the device, $90 in cash that was stolen and an extra $10 were returned to her after police released surveillance images showing the robber. The man showed up at the woman's door with the items and a note saying he was sorry that was signed, "Stupid."
Read more: Police: 'Remorseful Robber' Turns Himself In - New Hampshire News Story - WMUR New Hampshire