Sources said policeman Aqeel Khan had suffered severe injuries in the explosion.
Earlier on May 13, an explosion ripped through a mini market in Satellite Town area of the city.
The explosion was carried out using an improvised explosive device planted in a motorcycle parked on the roadside, police said.
According to the sources, a police vehicle deputed outside a mosque was also damaged in the blast.
A case was filed against unidentified men under Anti-terrorism Act 1997 (ATA) and The Explosives Act.
Tehreek-e-Taliban Pakistan (TTP) claimed responsibility for the attack.
The blast came two days after a terrorist attack on Pearl Continental Hotel, Gwadar in which five people were martyred.
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