ISLAMABAD, Pakistan (CNN) -- A suicide bomber in a car filled with explosives, rammed into a Pakistani security vehicle at a government checkpoint just outside Peshawar, killing six security forces and wounding 30 people Tuesday.
The bomb went off in morning rush hour. At least two children on their way to school received head wounds as a result of the blast, authorities said.
The bomb ripped through the façade of nearby buildings, exposing a ceiling fan and police uniforms still hanging on clothes hangers. The bombers car was destroyed. Blood spattered the white twisted metal of another car caught in the explosion.
An officer in Peshawar's bomb disposal unit told CNN security had been tightened Tuesday morning, because police had prior intelligence of an imminent attack.
The bomber's vehicle was carrying an estimated 85 kilograms of explosives, said Shafqatullah Malik, the bomb squad's Additional Inspector General.
Malik added that the damage was minimized because unlike previous attacks, this time the explosives were not lined with ball bearings.