(Updates toll) GUWAHATI, India, Dec 2 (Reuters) - A bomb planted by suspected tribal militants ripped through a passenger coach of a train in India's troubled state of Assam on Tuesday, killing two people and wounding 20, officials said. No one has claimed responsibility yet. Police suspect the little-known Karbi Longri North Cachar Hills Liberation Front (KLNLF), a tribal militant group demanding autonomy in the region, was behind the attack. Separatist and tribal rebels are often blamed for attacks in India's Assam state, a remote region riddled by insurgencies over the last few decades. "It was a bomb placed in one of the coaches, third from the engine," Jayanta Sarma, spokesman for the railways in Assam, told Reuters. The incident took place at Diphu, a town around 270 km (170 miles) south of Guwahati, the state's main city. The KLNLF says it is fighting for more autonomy for the Karbi tribespeople, accusing the government of flooding their area with outsiders and neglecting the welfare of tribals. Coordinated bomb blasts in Assam in October, which killed at least 77 people, were blamed on Islamist militants from neighbouring Bangladesh in league with separatists. (Reporting by Biswajyoti Das; Writing by Alistair Scrutton; Editing by Simon Denyer)
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