A suicide bomber exploded himself during a combined search operation by the police and Rangers Sindh in Gulistan e Jauhar block 13 early on Friday.

Security officials said the blast happened when the paramilitary rangers had surrounded an apartment complex in Karachi’s Gulistan-e-Johar Block 13 residential area.

According to reports, the suspect, who appeared to be a foreigner, locked himself up in the kitchen and detonated his bomb as Rangers tried to search his apartment.

Officials say they also arrested a man, a woman and four children from the apartment.