Sri Lankan police say unidentified gunmen have shot and killed two ethnic Tamil civilians in the eastern town of Ampara.
Earlier, the military said suspected Tamil rebel snipers shot and killed a soldier in the northern town of Muhamalai late Wednesday.
The attacks came as Sri Lankan Foreign Minister Mangala Samaraweera called on world leaders to put pressure on Tamil rebel leaders to return to stalled peace talks.
Meanwhile, European Union officials said they are ready to list the Tamil Tigers as a terrorist organization. Such a move would outlaw the group and its followers by shutting its offices and freezing its assets.
Increasing violence between Sri Lankan military personnel and Tamil rebels has raised fears that a 2002 ceasefire is on the verge of collapse. Some 200 people have been killed since the beginning of April.
The rebels have been fighting since 1983 for a separate homeland in the ethnic Tamil-dominated north and east. More than 60,000 people were killed before the 2002 ceasefire.Some information for this report was provided by AFP, AP .