Three suspected Maoists and a jawan of the seventh battalion of CRPF were killed in an encounter between the security personnel and the banned CPI (Maoist) at Bhatakta village in Giridih district on Monday. CRPF officials said the trooper who died was identified as Vishwajit Chauhan from Assam. Last week, suspected Maoists blew up the forest department’s under-construction building in Chaibasa.