In Jharkhand, three CRPF jawans were killed and seven injured in a landmine explosion in Gumla district of the state on Sunday. <br/><br/>Superindendent police of Gumla N. K.Singh told AIR that the incident occurred at Lapu near Jorigao village under vishunpur police station when Maoists blew up an anti- landimine vehicle. The security personnel were on their way to see the primary health centre which was exploded by the Maoists. <br/>Three seriously injured jawans have been taken to Ranchi for treatment. Other injured jawans have been admitted in Gumla hospital. A massive combing operations have been launched.<br/>