Update: Sept. 7, 7:30 a.m.
The FBI is leading an investigation into an explosion at a post office in northwestern Indiana that injured a postal worker.
FBI Special Agent Bob Ramsey says the woman was taken to a hospital after the explosion about 6 p.m. on Wednesday in East Chicago. Details of her injuries weren't released, but Fire Chief Anthony Serna says they aren't life-threatening.
An FBI statement to the Chicago Sun-Times says it's "yet to be determined if this is an act of domestic or international terrorism, but at this time there is no ongoing public safety concern."
The Porter County's bomb squad responded with a bomb disposal robot. K-9 units from the Lake County Sheriff's Department were at the scene investigating.
Original post
Authorities in East Chicago, Indiana say two pipe bombs have been found at a post office following a possible explosion.
Fire Chief Anthony Serna says a post office employee was injured during the incident. However, Serna didn't reveal the extent of the person's injuries.
Serna said the fire department received a call about a possible explosion around 6 p.m., the time the post office closes.
K-9 units from the Lake County Sheriff's Department were at the scene investigating the incident.
Officials say investigators from U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives were to join the investigation into the incident.