Tamil Tiger rebels overran a navy outpost in north-western Sri Lanka Wednesday, killing at least 10 sailors and losing four of their own, the guerrillas said. The rebel Liberation Tigers of Tamil Eelam (LTTE) said they seized heavy weapons and radar equipment after hitting the Irukkulampiddi naval detachment in a pre-dawn commando-style raid. Sri Lankan's navy, however, said security forces had beaten back the offensive by killing at least four rebels, including a senior leader, and destroying a guerrilla boat. "They are making big claims, but the attack was beaten back," navy spokesman Commander D. K. P. Dassanayake said. "We lost three sailors killed and four more wounded. Four Tigers were killed. One of their boats was destroyed by us."