UPDATE (9/26): A man is in serious condition after losing a limb due to an oilfield accident near McCook, according to Alton Fire Chief Javier Garcia. 

One of his coworkers died at the scene. 

The Hidalgo County Sheriff’s Office and the Occupational Safety and Health Administration are investigating the accident. 

Count on us to bring you more details. 

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NEAR McCOOK – A man is dead and another seriously injured following an oilfield accident in Hidalgo County.

Multiple agencies, including the Texas Railroad Commission, responded to an oil drilling site on Moorefield Road, south of FM 490 near McCook on Monday. 

Alton Fire Chief Javier Garcia said a big blue truck tipped over as oilfield workers attempted to set up a tower. He said two people were trapped under the equipment. 

"One of them was on top of the tower and the other was on the base of the truck, and the truck driver was able to escape," he explained. 

One person was pronounced dead at the scene.

The other worker was airlifted to Doctors Hospital at Renaissance. 

The person who was operating the truck in the driver’s seat was unharmed.

The Alton fire chief said they ended up using one of the oil company’s truck to lift the tipped over truck and pull the men out.

We still don’t know what company the men were working for or the victim’s identity.

Although fire officials said there was more than one company involved, our crews only saw vehicles for Quintana Energy Services coming and going from the site of the accident. We reached out to the company but haven't heard back.

Trey Roach, the director of health, safety and environmental of Quintana Energy Services reached out to CHANNEL 5 NEWS to let the public know that they were not the company involved in the accident.