Imphal, Aug 16: Two days after a bomb explosion killed six bus passengers in Manipur, a powerful Improvised Explosive Device (IED) was today detected in Churachandpur district of the state even as transporters kept their vehicles off the road in the interior areas to protest Thursday's blast. On a tip-off, police and bomb experts searched Hmar Veng area of the district and found a powerful IED, which was later defused, official sources said here. In Thoubal district, where militants exploded a bomb on the eve of the Independence Day, bus services with the rest of the state were paralysed as transporters demanding probe into the explosion, kept their buses off the road. Bureau Report