West Singhbhum (Jharkhand) [India], March 4 (ANI): Three jawans of the Jharkhand Jaguar (JJ), a special unit of the state police department, on Thursday lost their lives and two others sustained injuries in an improvised explosive device (IED) blast planted by Naxals in the Jharjhara area of the state's West Singhbhum district, Jharkhand Police has informed.