A maritime incident has been reported in the vicinity of Al Mocha, Yemen.  The U.S. Government has reason to believe this is associated with activities previously reported in U.S. Maritime Alert 2017-002A, as the event involves a mine detonation impacting a Yemeni Coast Guard vessel in Yemeni territorial waters in the Red Sea in the vicinity of Al Mocha.  Mariners are advised to exercise caution when transiting this area.  This alert will automatically expire on March 17, 2017.