(CNN) The bodies of two men were recovered after their helicopter crashed in Maryland, police said.

The helicopter went down Saturday in Chesapeake Bay, Maryland Natural Resources police said. Authorities identified the victims as Maryland residents Charles Knight, 38, of Mount Airy, and Matt Clarke, 36, of Pasadena. Knight was the pilot and Clarke a passenger, police said.

The two went missing Saturday when the helicopter crashed around 12:30 p.m. about a mile south of Kent Island, Maryland, police said. Authorities found the wreckage in about 55 feet of water Saturday evening.

The cause of the crash is unknown. Natural Resources Police investigators will be working with the National Transportation Safety Board and the Federal Aviation Administration to recover the wreckage, police said.

A brother of one of the men was "boating in the vicinity" when he saw the crash and notified the Coast Guard, said Corinne Zilnicki, a Coast Guard Petty Officer 2nd Class.

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