At least three people were injured in a car bomb blast at an airport in the northwestern Pakistani city of Peshawar early on Tuesday, police said.
The bomb was planted in a car parked at the airport and two of the injured are in a serious condition, said Rifat Pasha, a police official in Peshawar, the capital of North West Frontier Province (NWFP).
Five cars were also damaged in the explosion. No one has claimed responsibility for the bombing so far.
NWFP has seen a series of bombings at public places recently, and some have targeted pro-government tribal leaders.
The blast site was cordoned off and a probe has been launched to determine how the car with a bomb entered the airport's parking area.
On December 1, explosives fitted to a motorcycle went off at a market near Jinnah Park in Peshawar, killing one person. Another explosion occurred near the same park December 21, causing no casualties.