Islamabad, April 9 (Xinhua): One person was killed and 12 were injured when unidentified gunmen opened fire after violence erupted in the Pakistani port city of Karachi Wednesday, Dawn TV reported.

The violence broke out after two rival groups of lawyers clashed outside city court in Karachi, the private channel said.

TV footage showed that offices of lawyers, buses and a bank were set ablaze on the main and busy M. A. Jinnah Road in Karachi.

Incidents of firing were also reported in various parts of the city, and all markets in the city were closed after the violence broke out.

Rangers, a paramilitary force, and the police were called to prevent the violence from spreading.