GUWAHATI, India (AFP) - Gunmen ambushed and shot dead seven policemen in the restive northeastern Indian state of Manipur on Friday, police said, but a local politician managed to escape unhurt. Six other policemen were wounded when the gunmen jumped the convoy carrying local legislator W. Keishing near the village of Riha, 35 kilometres east of Manipur's capital Imphal, a police spokesman said. He said the lawmaker escaped with minor bruises which he sustained while jumping off his vehicle during the raid. "The militants opened indiscriminate fire from automatic weapons killing seven policemen on the spot and injuring six more," a police official who did not want to be identified said by telephone from Imphal. None of Manipur's 22 known militant or separatist groups have accepted responsibility for the attack. More than 10,000 people have lost their lives to insurgencies in Manipur, which borders Myanmar, in the past two decades.