An explosion was reported this morning at about 8:30 a.m. at the Casa Grande Social Security Administration building.
According to an Associated Press report, the small explosion happened near the back entrance to the office building. No injuries were reported.
If you like this story, consider signing up for our email newsletters.
SHOW ME HOW
You have successfully signed up for your selected newsletter(s) - please keep an eye on your mailbox, we're movin' in!
The Casa Grande Police Department directed all questions to the ATF, which has taken over the investigation along with the FBI.
A message left with an ATF press officer was not immediately returned.