Federal authorities are offering a $10,000 reward for information on the theft of hundreds of pounds of explosives from a pipeline worksite in Pennsylvania.

The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) said the thieves stole approximately 640 pounds of dynamite and 400 blasting caps from Gregory General Contracting Company’s worksite in Marietta.

The company reported the robbery to federal authorities on Monday, when workers noticed the trailer containing the explosives was open. The trailer’s locks were also missing.

In an interview with WGAL News 8 on Tuesday, Special Agent Donald Robinson said, "We're looking for some help from the public if anybody saw anything or has heard anything. We're concerned. It's 640 pounds of high explosives, and in the hands of somebody that doesn't know what they're doing. They could hurt themselves. And more importantly, they could hurt somebody else.”

ATF investigators are moving urgently 

On Wednesday, Special Agent Charlene Hennessy, the spokesperson for ATF said investigators are “moving with sense of urgency” to find the thieves and the explosives.

According to Hennessy, "Investigators are conducting interviews and running down all leads that we have developed.”

In addition, she said investigators are looking into the Gregory General Contracting Company’s inventory of explosives. They are also investigating if the company has all the required permits. They are also determining whether it followed procedures in handling, storing, and securing high explosives and detonators.

Furthermore, Hennessy said she cannot specify how the company stored the explosives since the investigation is still on going.

Officers from the Susquehanna Regional Police are helping the ATF to find the thieves and the explosives.

According to Hennessy, "These thefts do occur nationwide, but they are rare.” The agency recorded 15 of such incidents across the country in 2015 and 2016.

Anyone with information regarding the explosive theft should call 1-888-ATF-BOMB or send an e-mail at [email protected].