The injured jawans were airlifted through a helicopter to Ranchi and were admitted at the Medica Hospital.
Police said that Maoists executed the blast when jawans of the Zila police CRPF and Jharkhand Jaguar were conducting a search operation in the area.
Post the IED blast, a gun battle ensued between the two sides.
The martyred jawans have been identified as Devendra Kumar Pandit (Godda), Hardwar Sah (Palamu) and Kiran Surin (Simdega).
The injured jawans include Deep Topno (Khunti) and Nikku Oraon (Latehar).
The team of the jawans had entered the forest on Thursday morning during which the IED blast was executed by the ultras.
Police said while two jawans were martyred at the spot another succumbed to his injuries at Medica Hospital in Ranchi. (UNI)