A suicide bomber in a vehicle killed at least two Pakistanis and seriously wounded two foreigners in the Pakistani city of Peshawar on Monday (September 3), police said.
Initial reports that two American consulate workers were killed were retracted.
Officials said the bomber rammed into another vehicle in an area of the city near the Afghan border.
There was no immediate claim of responsibility for the attack, which a police officer said took place near a building occupied by a United Nations agency.
Pakistan's Taliban, who are close to al Qaeda, are blamed for many of the suicide bombings across Pakistan, a strategic U.S. ally.