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