In Sikkim, the police have succeeded in nabbing four out of the six life convicts who had escaped from the State Prison at Rongyek near Gangtok on Wednesday. The SP of the East district, M S Tuli told that AIR Gangtok correspondent that a massive manhunt has been launched to nab the remaining absconders.He said, while focus of search operations remain on the forests around Bhusuk and Assam Lingze areas, all the police stations, outposts and border-checkposts too have been alerted.