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MAYES COUNTY, Okla. (KFOR/KJRH) – Authorities say the bodies of two contractors were recovered early Friday morning following an explosion at an Oklahoma dam.

Officials with the Grand River Dam Authority told KJRH that three contractors were doing some work at the Kerr Dam when an explosion occurred on Thursday night.

One of the contractors was able to make it out safely.

However, he told emergency crews that the two other contractors were trapped about 80 feet down.

Around 4:30 a.m. on Friday, crews were able to reach the bodies of the men.

At this point, the cause of the explosion is still under investigation.

For the full story, visit KJRH.