A landmine suspected to have been planted by Maoists was found by police on Sunday at Madhupur village in West Bengal's Purulia district.
Purulia's Superintendent of Police Ashok Kumar Prasad said the area had been cordoned off after the mine was detected early this morning. A bomb disposal squad from Kharagpur in East Midnapur district was sent to the area to detonate it.
A huge police force led by Additional Superintendent of Police Rajesh Yadav also rushed to the spot.
On December 2, 13 policemen were killed and three others injured in a powerful landmine blast at Maoist-infested Kanchkiro in Bokaro district in Jharkhand.
Maoists also detonated six landmines in quick succession by remote control at a barren spot near Bandwan along Purulia's border with Jharkhand on December 2, 2006.