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Police says the death toll in rebel violence in India's remote northeast rises to 52

  • In this Tuesday, Dec. 23, 2014 photo, an injured person is treated at a hospital in Kokrajhar district, in northeast state of Assam, India. Separatist rebels gunned down more than 30 people and wounded a dozen more in India's remote northeast Tuesday in a series of coordinated attacks, police said. (AP Photo/Press Trust of India) INDIA OUT

    In this Tuesday, Dec. 23, 2014 photo, an injured person is treated at a hospital in Kokrajhar district, in northeast state of Assam, India. Separatist rebels gunned down more than 30 people and wounded a dozen more in India's remote northeast Tuesday in a series of coordinated attacks, police said. (AP Photo/Press Trust of India) INDIA OUT  (The Associated Press)

  • In this Tuesday, Dec. 23, 2014 photo, an injured woman and her child are carried in an ambulance to a local hospital in Sonitpur district in India’s northeast state of Assam, India. Long-simmering land and ethnic disputes erupted in bloodshed in northeastern India when rebels launched coordinated attacks on tribal settlers in Assam state, killing more than 50 people, officials said Wednesday. (AP Photo/Press Trust of India) INDIA OUT

    In this Tuesday, Dec. 23, 2014 photo, an injured woman and her child are carried in an ambulance to a local hospital in Sonitpur district in India‚Äôs northeast state of Assam, India. Long-simmering land and ethnic disputes erupted in bloodshed in northeastern India when rebels launched coordinated attacks on tribal settlers in Assam state, killing more than 50 people, officials said Wednesday. (AP Photo/Press Trust of India) INDIA OUT  (The Associated Press)

  • Indian tribal settlers take refuge in a local church after their village was attacked by an indigenous separatist group called the National Democratic Front of Bodoland, in Shamukjuli village in Sonitpur district of Indian eastern state of Assam, Wednesday, Dec. 24, 2014. Hundreds of survivors of a brutal rebel attack that killed at least 63 people in northeastern India sought shelter Wednesday in a church and school while security forces imposed a curfew in a bid to contain the latest bout of ethnic violence. (AP Photo/Anupam Nath)

    Indian tribal settlers take refuge in a local church after their village was attacked by an indigenous separatist group called the National Democratic Front of Bodoland, in Shamukjuli village in Sonitpur district of Indian eastern state of Assam, Wednesday, Dec. 24, 2014. Hundreds of survivors of a brutal rebel attack that killed at least 63 people in northeastern India sought shelter Wednesday in a church and school while security forces imposed a curfew in a bid to contain the latest bout of ethnic violence. (AP Photo/Anupam Nath)  (The Associated Press)

Police officials in India's remote northeast say that the death toll in rebel violence in Assam state has risen to 52 with the discovery of more bodies.

Hridayananda Das, a police inspector in state capital Guwahati said Wednesday that the rebels gunned down at least 37 Adivasi, or tribal settlers, in Sonitpur district and 15 others in Kokrajhar. The killings took place in a series of five coordinated attacks late Tuesday.

All those killed were Adivasis who largely work in tea gardens in the region.

Officials say that fighters from National Democratic Front of Bodoland were behind the killings.

Adivasis, who migrated to Assam more than 100 years ago, have been targeted by Bodo rebels in the past. Land and jobs are at the heart of the clashes.