Two teenagers were killed on Friday in clashes between Hindus and Muslims in eastern India that followed derogatory remarks about the Prophet Mohammad by two ruling party officials, police said on Saturday.
Police opened fire to break up the violence in the city of Ranchi in Jharkhand state but it was not clear if the two victims were killed by the police or by rioters, reuters reported.
Senior police official Surendra Kumar Jha said at least 14 police officials were injured in the incident in Ranchi and other areas. A curfew was imposed and Internet services suspended to stop the unrest escalating.
In northern Uttar Pradesh state police said they had arrested 230 alleged rioters after unrest spread across several towns after Friday prayers.
Following the clashes, the police imposed a curfew while chief minister Hemant Soren appealed to maintain peace and calm.
Internet services were suspended as fresh protests erupts in parts of Murshidabad district in West Bengal on Saturday, reports Hindustan Times.
Police said at least 12 of their personnel were injured in Murshidabad's Rejinagar area when they went to lift a nearly two-hour blockade on the highway near the local bus stand. Police fired some tear gas shells to disperse the mob.
Fresh violence was reported in the Panchla Bazaar area in Howrah district on Saturday as protesters clashed with the police and several houses were set on fire. Agitators pelted policemen with stones, injuring some of them, and also vandalised a BJP party office.
Muslims have been protesting about comments made recently by two officials from Prime Minister Narendra Modi's Bharatiya Janata Party (BJP) about the Prophet's private life, with the demonstrations often turning into violence between Hindus and Muslims.
The BJP has suspended its spokeswoman Nupur Sharma and expelled another leader, Naveen Kumar Jindal, for making the anti-Islamic remarks, which as well as upsetting Indian Muslims caused a diplomatic row from several Muslim countries.
The BJP - a Hindu nationalist party - said the offensive remarks did not reflect the government's position and that the comments were made by "fringe elements".
Party leaders have also instructed officials to be cautious when talking about religion on public platforms. Police in New Delhi said on Thursday they had filed a complaint against Sharma and others for "inciting people on divisive lines" on social media.
However, some in the minority Muslim community see this as the latest instance of pressure and humiliation under BJP rule on issues ranging from freedom of worship to the wearing of hijab head scarves.