Islamabad: A series of bomb blasts rocked 12 gas stations in the Pakistani Southern port city of Karachi on May 15 injuring one person, a senior police officer said.

Some 12 bombs exploded at Shell petrol pumps, owned by multi-national companies, smashing glasses and causing slight damage to the building, provincial Police Chief Syed Kamal Shah said.

Over the course of three hours, two men on a motorcycle went from one Shell station to the next, got gas and placed explosive devices in garbage cans.

No one has claimed responsibility for the attacks but authorities suspect the motive behind them was to target Western interests. The Royal Dutch Shell group is an Anglo-Dutch company based in London but has a US-based arm.

Police, who are investigating said one blast occurred at a petrol pump close to Governor House.

The blasts took place despite tight security for the processions on the occasion of Milad-un-Nabi.

PTI