Pakistani police say a bomb has exploded Friday outside a police station in the northwestern city of Peshawar, killing at least six people.

Rescue teams are rushing to the site.

This latest blast comes as Pakistani authorites are questioning suspects in connection with the wave of attacks on government sites Thursday that left at least 39 people dead.

Much of the violence was centered around Lahore, where teams of gunmen stormed the regional office of the Federal Investigation Agency, or FIA, and two police training centers and killed at least 26 people.

The attacks in Lahore took place hours after a suicide car bomber blew up a police station in the northwestern city of Kohat, killing 11.  In nearby Peshawar, a bomb hit a residential neighborhood populated by government workers. One child was reported killed.

The Pakistani Taliban had carried out four high-profile terrorist attacks in the past 11 days, killing more than 100 people.

Pakistani Interior Minister Rehman Malik told local media the recent violence show the militants want to bring the frontline from the violent northwest to Punjab province.  He called the escalation of violence a "guerrilla war."

Taliban leaders have pledged to hit government targets ahead of an expected army offensive in South Waziristan. Officials say most terrorist attacks in Pakistan are planned there.

Thursday's attacks came after Pakistani intelligence officials said that a suspected missile strike from a U.S. drone (unmanned aircraft) killed at least four militants in the North Waziristan tribal region bordering Afghanistan. 

Some information for this report was provided by AFP and AP.