Violence escalates in India's northeast after forces mistakenly fire on civilians, killing 14

Protesters threw stones and set fire to areas around a camp belonging to Indian forces in the remote northeast, with one civilian shot dead in renewed violence a day after 14 people were killed by defence forces, officials said.

At least 14 civilians and one member of the security forces were killed in Nagaland state on Saturday night, after Indian forces mistook a group of labourers for militants and opened fire.

More than a dozen civilians and some members of the security forces were also wounded in the incident and violence that followed, said a federal Defence Ministry official based in New Delhi.

Indian Home Minister Amit Shah said he was "anguished" at the news of civilians, who were members of a local tribal group, being killed.

Nagaland's chief minister, Neiphiu Rio, told Reuters that an investigation would be conducted and the guilty punished. He said the incident was the result of an intelligence failure.

India's northeast is home to a complex web of tribal groups, many of which have launched insurgencies, accusing New Delhi of plundering resources and doing little to improve their lives.

People in Nagaland have frequently accused security forces of wrongly targeting innocent locals in their counter-insurgency operations against rebel groups.

On Sunday, civilians launched protests against the government in the Mon district of Nagaland, where the 14 tribal people were killed.

"There is a mob outside which is pelting stones," a security official who did not want to be named told Reuters from the camp, which was surrounded by protesters.

"One civilian was shot dead and two more injured in firing by Assam Rifles a short while ago in Mon town," Noklem Konyak, president of the Konyak Students Union, told Reuters by telephone.

Konyak is the dominant tribe in Mon district.

Indian military and government officials were not immediately available to comment on the latest killing.

Saturday's incident took place in and around Oting village in Mon district, bordering Myanmar, during a counter-insurgency operation conducted by members of the Assam Rifles, the country's oldest paramilitary force, said a senior police official based in Nagaland.

Firing began when a truck carrying 30 or more coal mine labourers was passing the Assam Rifles camp.