NORTH WAZIRISTAN  -   The bomb disposal unit (BDU) on Saturday defused an improvised explosive device (IED) planted in Spim Wam area of the North Waziristan district. The BDU squad on a tip-off reached the Spim Wam area and defused the IED planted by some miscreants. After defusing the device, the security forces cordoned off the area and started a search operation to trace the miscreants.