The explosion follows yesterday's bus bomb in western
Saturday's blast went off 100km from the capital, Colombo, while the bus was travelling from the town of
Three attacks have now been carried out against civilians, rather than the military or politicians, but police have not yet made any arrests.
"We are still investigating," said EW Prathapasinghe, a deputy inspector general of police for the island's w
|Friday's bomb exploded 36km north of Colombo|
"These are signs of desperation in view of the defeats they have faced recently in the battlefield".
The bus attack came as government forces carried out a fourth day of air raids on Tamil Tiger positions in the north of the island.
On Friday, Sri Lankan air force jets destroyed a base belonging to the Sea Tigers, the rebels' naval division, at Wilawattai in the rebel-held Mullaitivu district, Samarasinghe said.
The Tigers have accused the military of non-stop air raids targeting civilians.
Rasiah Ilanthirayan, a spokesman for the Tigers, also accused government forces of killing two state employees and injuring three others in a mine blast on Friday in the Wanni district. The explosion occurred next to a Jeep transporting the officials.
Violence between the sides claimed the lives of more than 3,500 people during 2006.
There was no immediate claim of responsibility or denial from the Tigers, who are fighting for a separate homeland for minority Tamils in the northern and eastern regions of the Sinhalese-majority country.