The Sri Lankan ambassador to Norway Esala Weerakoon told the BBC that a group of people stormed into the embassy building and destroyed office furniture and computers.

Tamil protesters have been agitating in front of Norwegian parliament for the past few days demanding an immediate cease fire in Sri Lanka.

Since it is a holiday no staff was there on duty. Sri Lankan embassy has lodged a complaint with the police.

The police are reproted to have arrested one suspect but no more details were available, the ambassador said.

The envoy felt this attack could have been prevented if the authorities enhanced security of the embassy.

"We would not have allowed this to happen to Norwegian embassy in Colombo," Mr. Weerakoon told BBC Sandeshaya.