Investigators: 42-Inch Man Accused Of Trying To Bomb Police Station

Law enforcement officials say a man suspected of leaving a backpack bomb outside a Colorado police station was spotted on surveillance video from a store where he bought a cellphone used in the device.

Two officials with knowledge of the investigation tell CBS Denver that 64-year-old David Michael Ansberry was noticeable because he is 3 feet 6 inches tall.

Ansberry is a resident of the Bay Area in California.

The officials spoke on condition of anonymity because they weren't authorized to publicly discuss the case.

One of the officials says the device was designed to be remotely detonated using a cellphone but failed.

Ansberry was arrested over the weekend in Chicago.

A detective found the device in a backpack Oct. 11 and brought it into the Nederland police station, believing it was lost property. It was eventually detonated in a parking lot.