Further violence followed, including the Vankalai massacre. The Sri Lankan army and Tamil Tiger rebels blamed each other for the killings. There was also the Kebithigollewa massacre in which the LTTE attacked a bus, killing at least 64 Sinhalese civilians and prompting more air strikes by the Air Force, and the assassination of Sri Lanka's third highest-ranking army officer and Deputy Chief of Staff General Parami Kulatunga on 26 June by an LTTE suicide bomber. These events led the SLMM to question whether a cease-fire could still be said to exist.