A 30 kg landmine was recovered on Saturday by police from Jharkhand's Chatra district, officials said.
The mine was recovered on Saturday evening from Lipta village in Chatra district, some 190 km from Ranchi.
"The landmine was recovered in a police operation against Maoist rebels in Chatra district. Maoist rebels had planted the landmine to detonate police vehicles," a police officer said.
He said: "It was a powerful landmine which could have blasted a mini bus."
Maoist guerrillas are active in 18 of the 24 districts of Jharkhand. Nearly 1,550 people have been killed in Maoist-related violence in the last eight years.