U.S. military helicopter crashes in Oman

(CNN) -- A U.S. military helicopter with five people aboard crashed Thursday, July 19th in Oman, on the southeast coast of the Arabian Peninsula, the U.S. military said.

The status of the crew members was not immediately clear.

The MH-53E Sea Dragon crashed about 15 miles southwest of Muscat, Oman, a military statement said.

Investigators have ruled out hostile action but have not determined what caused the crash, it said.