A 29-year-old Sri Lankan working for a New Zealand agency involved in tsunami relief was abducted and shot dead by a gang in the east of the country, a defence ministry spokesman said.
Meanwhile, the office of a Tamil charity based in the disputed northern peninsula of Jaffna helping some 16,000 people displaced by months of fighting was torched with valuable documents burned, the charity said.
"People wearing uniforms, carrying guns and two or three cans of fuel chased away all the security guards," said V.
Sibanabiyar, the head of the Tamils Rehabilitation Organisation.
"They broke into the offices, damaged our computers and then poured fuel over the place and set fire to it.
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Sporadic violence continued in the country's northeast during a lull in the fierce fighting that erupted two weeks ago that has left many hundreds dead and forced thousands to flee their homes.
A policeman was killed Wednesday by a mine attack while on patrol in northeastern Batticaloa district blamed on the L