LOUISVILLE, Ky. (WDRB) -- Federal regulators say they are investigating the troubled Iowa trucking company linked to the 10 deaths of immigrants found in one of its trailers in Texas.

The Federal Motor Carrier Safety Administration confirmed Tuesday that it is investigating Pyle Transportation.

The agency says its findings will be shared with Department of Homeland Security investigators, who are conducting a criminal investigation into the immigrants' deaths.

Company owner Brian Pyle said Monday that he had no idea how dozens of immigrants became packed into a trailer with its name on it. He says the company had sold the trailer to an individual in Mexico, and an independent contractor was driving it to Brownsville, Texas, to carry out the sale.

The Schaller, Iowa-based company has a history of safety and financial problems.

The driver of the truck, James Bradley Jr., is charged with illegally transporting immigrants for financial gain. Police said  the operation was discovered in the parking lot of a Walmart in San Antonio Texas over the weekend.

Bradley lives, at least part-time, in a home on McCloskey Avenue in Louisville, according to the people home on Tuesday. They declined to be interviewed.

Police said they found around 100 people in the back of the 18-wheeler, ten of which died from the extreme heat. Between 30 or 40 had to be treated at the hospital. 

The truck had no air conditioning and investigators said  the people in the back were taking turns breathing through an air hole. 

Bradley told police he didn't know anyone in the back of the truck.

"Honestly, he was a nice guy," Pyle said. "I mean he seemed like a really nice guy, but hindsight is 20/20."

In 2004, Bradley was arrested in Florida for grand theft motor vehicle.

"Never in my wildest dreams did I think something like this would happen," Pyle said. "I 'm really sorry for all the victims involved. It's unreal."

Bradley told officers he was driving the truck from Laredo Texas, to Brownsville Texas. He said that he stopped at the Walmart to use the bathroom when he said he heard banging coming from the trailer. 

He then went around back and opened the doors and found the dozens of people.

Bradley had his commercial driver's license suspended in April. If convicted, he could be facing the death penalty.

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