Tamil rebels have attacked a Sri Lankan naval base on the island of Delft, off the country's northern Jaffna peninsula, killing several sailors. The rebels say they overran the base Thursday and killed 35 sailors, but Sri Lanka's military says fewer than 10 sailors were killed.

Sri Lanka's authorities say at least seven people were killed Saturday when a roadside bomb hit a civilian bus in the island's north. A military spokesman says the attack occurred outside the town of Vanvuniya. He said six civilians and one soldier were killed and at least 26 other people were wounded in the blast.

Sri Lankan officials say suspected Tamil rebels have killed four farmers in the eastern part of the country. Officials say rebels ambushed the farmers Thursday in the district of Polonnaruwa. The attack happened near a jungle area where Tamil rebels have been fighting Sri Lankan troops. The rebels had no immediate comment on the shootings.

Sri Lanka's Defense Ministry says a roadside bomb killed five soldiers and wounded another Friday, as they traveled in the country's north. In a separate incident, officials say mortar fire from Tamil rebels late Thursday killed eight civilians in the east.