Pakistan ? Police are questioning a domestic spy agency employee accused of planting explosives outside the offices of a top elected provincial official who is at odds with the central government, a security official said Friday.

Mohammed Tufail, a cleaner employed by the Intelligence Bureau, was caught Tuesday after police saw him throwing a seven-inch stick of dynamite, concealed in a packet, into a trash can at the office of chief minister Akram Durrani in the northwestern city of Peshawar.

Shortly after the incident, Durrani, the elected leader of the provincial government of the North West Frontier Province, accused Tufail’s boss of freeing him from police custody and taking away the seized explosives, which he says had been planted to target his office.

Durrani on Tuesday ordered police to arrest a provincial director of the Intelligence Bureau, Ziaullah Khan, and Tufail. The Intelligence Bureau is a powerful civil intelligence agency that answers to the prime minister’s office.

Durrani is from a hard-line coalition of Islamic parties that controls the provincial government but opposes the central government.

About 80,000 government troops are posted in North West Frontier Province to stop Taliban militants from crossing into bordering Afghanistan and to help find al-Qaida chief Osama bin Laden, who is believed to be hiding in the mountainous frontier shared by the two countries.