Updated

The U.S.S. Guardian is stuck on a reef after the minesweeper ran aground in the Sulu Sea off the Philippines Thursday, the Navy says.

None of the about 80 crew members aboard the ship were injured, and the ship does not appear to be leaking any fuel, Reuters reports.

"The crew is currently working to determine the best method of safely extracting the ship,'' the Navy said, adding that the cause of the grounding was under investigation.

The ship had just completed a port call at Subic Bay in the Philippines when the grounding occurred.

Reuters contributed to this report.