No one was injured in the blast that followed a series of attacks in the United States over the weekend
An explosive device blew up early on Monday when a bomb squad robot cut a wire on the mechanism, one of as many as five potential bombs found near a train station in Elizabeth, New Jersey, officials said.
No injuries were reported. The blast comes after a series of attacks in the United States in the last two days, including Saturday's Manhattan bombing that left 29 injured.
The device that went off in Elizabeth was foud in a backpack that was left in a trash can, Mayor Christian Bollwage told reporters.
A total of five potential explosive devices were found the backpack, Bollwage said.
Police had already been investigating the Manhattan bombing, a Minnesota mass stabbing and a New Jersey pipe bomb blast.
"I can imagine that if all five of them went off at the same time, that the loss of life could have been enormous if there was an event going on,” Bollwage told reporters.
Bollwage said it is unclear whether Elizabeth, was targeted or if the backpack might have been discarded to elude investigators.
(WION with inputs from agencies)