"Another blast, more mindless violence and mind numbing tragedy," Omar said on micro-blogging website ''twitter''.
The Chief Minister, however, said he would not speculate about who was behind the blast and allow the police and other agencies to find that out.
"I would hesitate to comment or speculate on a whodunit. Let the police and others get on with it," he said. Omar conveyed "heartfelt sympathies to the victims and their families."