Six homemade bombs exploded in the Indian city of Patna amid a crowd gathered to hear Prime Ministerial candidate Narendra Modi speak Sunday, killing five and injuring 73.
Modi ignored the blasts during his speech, and attendees–numbering in the hundreds of thousands–and local press were not notified of the blasts until after the campaign rally ended, the Associated Press reports.
Politicians have suggested that Modi’s brand of Hindu nationalism could aggravate tensions between Hindus and Muslims in India.
Four men have been detained in the incident, but authorities did not clarify whether they were suspects. Officials also discovered two unexploded bombs near the train station where one of the bombs exploded.