Sri Lanka's Tamil Tigers rebels say they are losing patience with the government and warn they might resume fighting if attacks on their members continue.
Tuesday's warning by the leader of the Tigers' political wing, S.P. Thamilselvan, follows the killings of two senior rebel leaders and two civilians by unidentified attackers in the northeastern town of Trincomalee.
The rebels say Sunday's attack poses a serious threat to the cease-fire with the government. They allege military intelligence officials were behind the attack, but the army denies it.
Meanwhile at least eight policemen and a government soldier were wounded in two separate attacks in the country's restive northeast.
Local officials say the policemen were wounded when unidentified men hurled two grenades at an anti-riot squad. Hours earlier, suspected rebels fired at an army post, wounding one soldier.