Explosive device rocks Social Security office in Casa Grande

An explosion violently shook the Social Security Administration building in Casa Grande but didn’t injure anyone Friday (Nov 30th). Federal sources linked to the investigation tell CBS 5 News that an arrest has been made. No other details are available.

The FBI said they’re investigating the explosion and are “utilizing all necessary resources” including: investigative personnel, the Evidence Response Team, Special Agent Bomb Technicians and the Hazardous Materials Response Team.

The blast was caused by a device that detonated at the rear of the building, according to Agustin Avalos of the city of Casa Grande.

The explosion happened around 8:15 a.m. in a building that houses several other downtown businesses. All business were evacuated, Avalos said.

No injuries were reported and the type of device had not been determined, Avalos said. Witnesses inside the building said the explosion shook the building violently.

“I was afraid to go into the back because it was so close,” said Alicia Perez.

Officials from the Bureau of Alcohol, Tobacco, Firearms and Explosives, the FBI and Casa Grande Police Department are investigating, Avalos said.

Aerial news footage showed extensive damage to a doorway in the back of the building and to the side of an car near the doorway.

The FBI spokesperson claimed Friday afternoon that they are unable to confirm whether anyone has been arrested. Casa Grande is about 50 miles south of Phoenix.