International aid officials in Sri Lanka say 15 local humanitarian workers have been shot to death in the war-ravaged town of Muttur.
The victims worked for the French agency Action Against Hunger and were helping with the recovery from the 2004 tsunami.
Officials representing international aid groups in Sri Lanka said they found the victims Sunday in their office in Muttur. The had been shot in the head. The officials say they do not know who the killers could have been.
Meanwhile, Sri Lankan troops launched new attacks Sunday against Tamil Tiger rebels near a vital irrigation channel on which local farmers depend for water. The channel has been under rebel control.
The rebels say the army opened fire when they went to reopen gates holding back water.
Sri Lankan officials say they were not informed of talks between the Tamil rebels and Norwegian negotiators in which the rebels agreed to open the gates.
The dispute over the irrigation channel has been at the center of recent fighting between the Tamil rebels and the government.