U.S. Navy vessels are helping to patrol waters off Yemen, in an effort to prevent 23 al-Qaida-linked prison escapees from fleeing the country.
U.S. military officials say the vessels are deployed to intercept and recapture any of the men who try to leave Yemen by sea.
The 23 escapees include Jamal al-Badawi, mastermind of the 2000 bombing of the USS Cole that killed 17 Americans. Authorities say he escaped through a 140-meter tunnel almost a week ago.
Interpol has issued a global security alert and called on its 184-member states to help apprehend the men. Another escapee is Fawaz al-Rabeiee, accused of involvement in the 2002 attack on a French oil tanker off the Yemen coast.
Some information for this report was provided by AP and Reuters.