CASA GRANDE, Ariz. (AP) — Authorities say they're investigating a small explosion that happened at the back entrance of a Social Security Administration office in a small town about 50 miles south of Phoenix.
Casa Grande Fire Marshal Barbara Rice says the explosion was reported just before 8:30 a.m. Friday and no one was injured.
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.
After Youtube Terminated His Account Twice, Hickok45 Found A New Home
AP News - 40 Indian pilgrims die as vehicle falls into pond
Donald Trump Just Called Ted Cruz 'A P*ssy' [VIDEO] | RedState
Rob Lowe catches heat for comments about Cam Newton's post #SB50 press conference
Kurt Schlichter - The Case for Donald Trump
Toxic Words | Human Events
Final CNN tracking poll of NH: Trump leads big, Rubio second, Bush and Christie in deep trouble