KARACHI, Feb 11: A bomb went off on Korangi Road near Qayyumabad flyover on Monday night, injuring a policeman who happened to be passing by the area.

“It was an improvised explosive device weighing 200gm planted at a Sui Gas substation. It appears that the target was the substation,” DIG South Shahid Hayat said, adding that no traces of the device containing ball-bearings had been found.

The powerful explosion was heard several kilometres away and triggered panic in the entire DHA locality.

The wounded policeman was taken to the Jinnah Postgraduate Medical Centre.

Initial reports suggested that the explosion had taken place in a gas pipeline.

The Sui Southern Gas Company termed it an act of sabotage and said its town border station (TBS) under the Qayyumabad bridge had been targeted.

“The roof, grill and recorder installed at the TBS were partially damaged when some unknown miscreants threw a cracker at the station which caused the blast,” the company said in a statement. The gas pipeline was safe and supply to the area was not affected, it added.