Relax: your cell phone might not be a bomb after all.

A South Korean man whose death initially was blamed on an exploding cell phone battery was killed by a car accident involving his colleague, police said Friday.

The International Herald Tribune reports (November 29th) that the quarry worker, only identified by his family name Seo, was found dead Wednesday with a melted phone battery in his shirt pocket. Police and a local doctor who examined his body said the battery may have killed the man.

The colleague, identified only by his surname Kwon, confessed to police that he accidentally killed Seo while he was backing up a drilling vehicle but first reported to police that the death was caused by the battery explosion, Min said.

That's quite an alibi...