"Security lapse was there, there cannot be any doubt about that. Bihar Chief Minister Nitish Kumar spoke to me yesterday, expressed his sadness and said investigation is going on and assured me that within one or two days he will collect all information," he told reporters here.
Since the rally was being addressed by BJP's Prime Ministerial candidate, "extra precautions should have been taken" while ensuring that people are not put to inconvenience, the BJP President said.
Six persons were killed in the seven low intensity serial blasts.
He praised the people of the state for showing showing patience and maintaining calm in the wake of the blasts.
Six persons were killed in the seven low intensity serial blasts of which six bombs went off in and around the venue of Modi's mega rally at Gandhi Maidan shortly before his address before a huge gathering yesterday.