KARACHI, Dec 28: An activist of the Awami National Party was killed and three others were injured when gunmen opened fire at the party's office in Gulistan-i-Jauhar area of the city on Tuesday night.

SSP Javed Akbar Riaz said that some people on a motorbike opened fire at the ANP's office in Pehlwan Goth.

Four activists, who were sitting outside the office, were injured and one of them identified as Zahid was killed.