New Delhi, Nov. 12 -- Congress leader Sandeep Dikshit on Wednesday slammed the Union Government, questioning the lack of vigilance in the Delhi blast case, asserting that if casualties occur, questions must be asked of the government.

Dikshit said that the National Investigation Agency is a competent organisation stating that it should investigate the matter so that such incidents can be reduced.

"Why was vigilance not up to the mark?... If such casualties occur, we must ask questions of the government... NIA is a competent institution... It should also investigate why such incidents are increasing because this will be able to reduce the number of such happenings," Sandeep Dikshit told ANI.

Earlier, Communist Party of India (CPI) MP Bi...