Karachi: Unidentified armed men opened fire at a political rally in the Pakistani port city of Karachi, killing at least 11 people and injuring more than 30, a media report said.

Violence erupted when the "Mohabbat Sindh" rally, organised by the Awami Tehreek party and the People's Amn Committee, reached the old city area, Geo News reported.

A reporter and a cameraman of a private news channel were among the injured.

Several shops and vehicles were set ablaze by the attackers.

Senior police official Shaukat Ali told Geo News that a search operation has been launched in the areas through which the rally passed.

A deceased woman was identified as Ghazala Batool, an employee of Pakistan International Airlines.