Updated

Police say the death toll in a suicide car bombing in northwest Pakistan has risen to 24.

Thursday's explosion struck near government offices in the Hangu area, a rough area located just outside Pakistan's lawless tribal regions bordering Afghanistan.

It is the latest in a wave of attacks in Pakistan since the May 2 U.S. raid that killed Usama bin Laden.

No group immediately claimed responsibility for the attack. But the Pakistani Taliban have claimed other recent strikes, saying they are avenging the Al Qaeda leader's death.