No injuries in blast at Casa Grande Social Security office

2012-11-30T12:00:00Z 2012-11-30T13:33:08Z No injuries in blast at Casa Grande Social Security officeThe Associated Press The Associated Press

CASA GRANDE  — Authorities say they’re investigating a small explosion that happened at the back entrance of Casa Grande’s Social Security Administration office.

The explosion was reported just before 8:30 a.m. Friday and no one was injured, Casa Grande Fire Marshal Barbara Rice says.

Television images show the building was blackened around the entry door, but Rice says the damage was not extensive.

The federal Bureau of Alcohol, Tobacco, Firearms and Explosives has investigators at the scene. ATF spokesman Tom Mangan says they are just starting their work and more information will be available later Friday morning.

Casa Grande police did not immediately respond to requests for information.

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