The devices matched with those used in the Patna blasts that killed six people and left over 80 wounded on October 27.
The recovery comes close on the heels of the arrest of Ujjair Ahmad from Doranda area here in connection with the Patna serial blasts.
Another accused Imitiaz Ansari arrested in connection with the Patna blasts also belonged to Ranchi, while the prime suspect Ainul alias Tarique who died at Indira Gandhi Institute of Medical Sciences hospital in Patna following fatal injuries, also hailed from Ranchi.
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