QUETTA: Four health workers, including three women were killed and three others injured when armed men opened fire on them near Eastern By Pass here Wednesday According to details, armed men opened fire on a pickup carrying health workers team near Eastern By Pass here today. Four workers including three women Ejaz, Hameeda, Sania and Aamda died and three others Saleema Ejaz, Fareda Bibi and Rubina Bibi were injured in the firing. Police and FC reached the site and started investigation. Police conducted raids along Eastern Bypass arrested several suspects who were undergoing interrogation. It is added here that immunization campaign was launched in 18 Union Councils of Quetta. Meanwhile health workers announced to boycott this special immunization campaign.