Suspected Tamil rebels posing as fishermen blew up two of their boats in a suicide ambush on a naval base, killing at least one sailor in the first such attack on Sri Lanka's touristy southern coast, the military said. Police imposed an open-ended curfew in the town, the Associated Press reported. Two sailors were also missing and at least 12 others wounded in the attack in the resort town of Galle, while two navy fast boats and another small boat suffered damage, a Defense Ministry spokesman said, adding that 14 civilians were also wounded.