An army jawan was killed and two others were seriously injured when a powerful bomb, allegedly planted by insurgents, exploded in Manipur's interior Churachandpur district bordering Myanmar and Mizoram this morning.

Official sources said personnel of 11 Gorkha Rifles were on patrol duty when the bomb, which was attached to a culvert, exploded at around 6.40 am killing a jawan on the spot and injuring two others seriously.

It was not immediately known whether the suspected insurgents used remote-controlled device or a timer. The place of occurance is about 6 km from Churachandpur police station and about 50 km south of the state capital, the sources said.