The FBI's Buffalo office said it found no signs of a terror attack and turned the case over to local police as a traffic investigation.

A number of public buildings and bridges in the area also closed early on Thursday due to the explosion and the threat of further attacks.

Border crossings between the U.S. and Canada have been closed after a vehicle exploded in a possible terrorist attack.

People in the general area of the facility in the city of Shepherd, Texas, were told to shelter in place or leave the area.

An explosion at a Nebraska ammunition manufacturer's facility comes at a time when Americans are worried about an ammo shortage.

Social media posts from local residents said that they'd heard an explosion and then a noise that sounded like "low-flying jets."

An explosion and fire at an Archer Daniels Midland facility in Illinois injured eight employees and sent a tower of smoke into the air.

The vintage jet struck a number of vehicles on the ground as it crashed near an apartment complex in Michigan.

Five people were found dead after a house explosion in western Pennsylvania that destroyed three structures and damaged others.

A house explosion in western Pennsylvania destroyed three structures and damaged at least a dozen others.