Advance explosives were recovered from under the bridge weighing 20kg.
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The Jharkhand Police recovered four Improvised Explosive Devices (IEDs) weighing about 20 kgs.
It was found under a road bridge at Jharkhand`s Giridih.
The small bridge under which the IEDs were planted was under the Madhuban police station area.
The police recovered the IEDs following a tip-off, Gulshan Tirkey, a senior police official said.
The official said that that explosive was planted by extremists to injure Police and CRPF.
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