Islamabad: At least two persons, including a security guard, were killed and several injured in a bomb blast in the Pakistani port city of Karachi on July 11, media reports said.

The bomb exploded in an 11-storey commercial building on the main boulevard Shahra-e-Faisal at 07.30 hours local time. Offices of several companies are located in the building.

Police said the security guard outside the building died in the blast. A second body was found later. Four people were injured, according to preliminary reports.

The blast destroyed a pillar of the building indicating the bomb may have been placed against it, a police official was quoted as saying.

The blast also smashed some windows of the building. No one has claimed responsibility for the blast.

Police have rushed to the blast site to assess the situation. Explosive experts and dozens of police were at the scene rummaging through the debris for clues.

PTI