Philadelphia police believe a man whose watch was stolen as he sat slumped in a hospital waiting room may have been dead for 50 minutes before anyone took notice.

Security video shows no one attends to 63-year-old Joaquin Rivera until about 50 minutes after he clutches his chest, loses consciousness and appears to stop breathing.

The one person who approached the dying man at Aria Health's Frankford Campus instead steals his watch.

Capt. John McGinnis says the tape shows Rivera going to the window twice in the 11 minutes after he arrived late Saturday, complaining of chest pain, before he loses consciousness.

Police are investigating only the theft. They have one of three suspects in custody.

Aria Health says it's conducting an internal investigation but won't otherwise comment.