QUETTA – Three people were killed in two separate incidents of firing in Harnai and Quetta on Tuesday.According to reports, two persons identified as Nazeer Ahmed and Pir Muhammad were killed in a tribal clash in Shahrug area of Harnai district. The deceased were moved to a nearby hospital for autopsy by local administration.In another incident, a person was killed in Eastern Bypass on the outskirts of Quetta.Police said that armed men opened fire at a man in Killi Bangulzai and fled away from the scene. Resultantly, he died on the spot. His body was moved to a hospital for medico-legal formalities. Police said the deceased looked like a bagger and motive behind the killing is yet to be ascertained.