Pakistani security officials on Sunday seized 12 tonnes of explosives and arrested a terrorist from a hideout in the restive northwest, bordering Afghanistan.

During an operation in Khyber Agency, security forces seized mine bombs, rockets and jehadi books among others, Col. Naeem of Frontier Scouts said.

The seized explosives were meant to be used in terrorist attacks in Rawalpindi, Peshawar and Karachi, he added.

Meanwhile, in a separate incident in Khyber Agency, three security officials were injured when their vehicle hit a landmine.

The incident occurred in Shakus area of the Bara tehsil.