"The kind of incident that happened in Patna, I believe it is due to terrorist activities," Rajnath Singh said Monday.
"The incident is unfortunate, certainly there were intelligence and security lapses, because of which the incident occurred," he said.
Six people were killed and over 80 injured Sunday in a string of explosions that took place at Patna railway station and Gandhi Maidan shortly before BJP's prime ministerial candidate Narendra Modi spoke at a rally.
Rajnath Singh lauded the people of Bihar for being patient.
"I want to thank the people of Bihar who displayed such patience, I appreciate it," he said.
He added that Bihar Chief Minister Nitish Kumar called him Sunday night and assured him that action will be taken.
Party leader Shahnawaz Hussain said the Bihar government failed to follow its "Rajya Dharma" (State duty).
"It's the duty of the government to provide security to all rallies, regardless of party organising it. Bihar government failed to follow its 'Rajya Dharma'," he said.
--IANS (Posted on 28-10-2013)