Sri Lankan officials say suspected Tamil Tiger rebels have detonated a mine in northern Sri Lanka, killing two sailors and wounding another.
Officials say the attack occurred Saturday, on the northern Jaffna peninsula.
In a separate incident Saturday, unidentified attackers in the eastern town of Batticaloa hurled a grenade into the parking area of a compound occupied by truce monitors, damaging vehicles but causing no injuries.
A spokeswoman for the monitoring mission says the attack was the first targeting the monitors since a 2002 cease-fire. The unarmed monitors are all from Scandinavian countries.
The explosion came hours after the monitors reprimanded Tamil Tiger rebels and government forces for an increase in violence.
Sri Lanka's government says at least 69 members of its security forces have been killed by rebels since early December.