Why ethnic violence in India’s Manipur has been going on for three months

Dozens of houses lay vandalised and burnt during ethnic clashes and rioting in Sugnu, Manipur [File: Altaf Qadri/AP]

At least 150 people have been killed since May in ethnic violence in Manipur, a remote state in northeast India with a history of tensions between tribal groups.

Soldiers were rushed in from other parts of the country to contain the violence, and months later a curfew and internet shutdown remain in force in most parts of the state.