ALLENTOWN, Pa. – The blast happened in Allentown.  The blast happened in Allentown around 9:30 pm Saturday, Assistant Police Chief Gail Struss said early Sunday.
"We can confirm that there is at least one fatality," she said in a statement. A news conference was planned Sunday afternoon.
City and Lehigh County authorities are investigating along with state police, the FBI and federal Bureau of Alcohol, Tobacco, Firearms and Explosives
"There is not any remaining threat to public safety, "the FBI said in a message on Twitter.
Resident Carlos Perodin told The Morning Call of Allentown that he was watching a movie with his wife when he heard a thunderous explosion and went to the scene
"The fire was crazy," he said.
Another witness to the aftermath of the explosion, Stephanie Connelly, told The Morning Call
"This is real life and I
A bus station was towed into a command center with armored vehicles, cruisers, mobile command units and even portable bathrooms, the paper reported. Several portable tents were thus erected for evidence processing.
A shelter was set up at elementary school.
The FBI said earlier that it was working with other agencies and was "assessing the cause, with public safety the bureau's highest priority." Officials asked who witnessed the blast or had information about it to contact investigators.