Suicide bomb rocks UN food agency in Pakistan

Five killed after blast in tightly guarded areas
Suicide bomb rocks UN food agency in Pakistan

Pakistani policemen investigate an area of a United Nations building after a suicide blast in Islamabad -------------->

ISLAMABAD (Agencies)
A suicide bomber attacked the United Nations World Food Program office in the Pakistani capital Islamabad, killing five people and wounding several, a senior police official said."It was a suicide blast," Bani Amin, deputy inspector general of police operations, said at the tightly guarded WFP office in a residential area of the city.

A witness said the blast went off shortly after a truck entered the compound. The U.N. office was highly secured leading to speculation that the bombing could have been an inside job.

"All of a sudden, a smoke cloud enveloped the building and we came out where wounded people were lying."

Two foreign U.N. workers were killed in a suicide car bomb attack on a hotel in the northwestern city of Peshawar in June.

The army has made significant progress against militants in the Swat valley and elsewhere in the northwest and Interior Minister Rehman Malik says the back of the Pakistani Taliban has been broken.

But the militants have struck back with several bomb attacks in recent days as the army prepares to launch an offensive on the Pakistani Taliban's main bastion in the South Waziristan region on the Afghan border.