Maoist rebels detonated a powerful land mine killing at least 50 tribal villagers in Chhattisgarh on Tuesday.
The outlawed Communist Party of India-Maoist ambushed two trucks packed with tribals campaigning against the rebels in the Darmagura area of Dantewada district, about 500 km south of this state capital, police said.
The massacre, one of the worst incidents of violence by Maoists, took place around 11 am.
"Maoists set off the landmine in an area bordering Andhra Pradesh," Chhattisgarh's Additional Director General of Police SK Paswan said. He said the death toll could go up.
The tribals were returning from Dornapal after attending an anti-Maoist rally organised by the BJP government.