Mourners in northeastern Sri Lanka Friday held funeral services for the victims of a land mine explosion that killed 64 people. They placed many of the bodies in mass graves.
The blast hit a passenger bus. It killed more people than any other attack in Sri Lanka since 2002.
Authorities say Tamil Tiger rebels are responsible. The rebels say they did not do it. They say blaming them is meant to discredit their movement.
Sri Lanka's military retaliated just the same. Since Thursday, Sri Lankan aircraft twice have bombed a key rebel stronghold (near Kilinochchi). There are no reports of casualties.
The landmine attack and the air strikes raise concerns about Sri Lanka's faltering peace process. Rebel leaders say the air strikes indicate the government is ready for war.
Sri Lankan President Mahinda Rajapakse says he remains committed to the country's 2002 ceasefire agreement.