A police mobile passing through the city's Spini Road was targeted with an IED blast, killing a policeman on the spot and injuring eight other people, officials said.
One of the injured policemen died in the hospital.
The others injured in the blast were civilians passing through the area when the blast took place.
Baluchistan's Home Minister Mir Sarfaraz Bugti told the media that around three Kg of explosive material was used in the blast.