Gauhati, India ? Suspected separatist guerrillas knocked at the homes of villagers in India’s remote northeast just after midnight, asked the men to come out and then killed 22 of them, survivors and police said Sunday.

Another 12 were wounded in the attack on Dadgiri, a village in Assam state close to India’s border with Bhutan, said P. K. Bhuyan, a local police officer.

The attackers told the female villagers that the men would return in the morning. Instead, they lined them up and fired, police quoted Babulal Yadav, a villager who survived the attack, as saying.

Twenty people were killed instantly in the attack. Two others died on the way to hospitals in Kokrajhar, about 155 miles west of Gauhati, the state capital, police said.

No group claimed responsibility for the killings, but police blamed them on rebels of the National Democratic Front of Bodoland, or NDFB.

The NDFB rebels, who belong to the ethnic Bodo tribe, are fighting for an independent homeland. They accuse the federal government of exploiting the region’s rich timber and mineral resources while neglecting the local economy.

More than 10,000 people have died during the decade-long insurgency in Assam.