Suspected Maoist rebels on Friday attacked a police patrol in eastern India, fatally shooting nine officers and one civilian, police said.
The attackers fled after an exchange of gunfire with the police in Bijapur district of troubled Chhattisgarh state, said Ramnivas, a top police officer, who uses one name.
Suspected rebels opened fire on the police officers who were returning to their base on foot after routine patrolling in the area, said Ramnivas.
The civilian was carrying their supplies, he told The Associated Press.
The Press Trust of India news agency earlier reported that suspected insurgents had killed 11 police officers.
The area is nearly 300 miles (500 kilometers) south of Patna, the capital of neighboring Bihar state.
It's a stronghold of the rebels, who are demanding land and jobs for the poor and often target government forces.
Inspired by Chinese revolutionary leader Mao Zedong, the rebels have fought the government for more than four decades in several Indian states. They have tapped into anger among the rural poor over being left out of the country's economic gains.