A Shia Hazara man was shot down on Zarghoon Road and two more members of the community were killed at Manak Chowk in Quetta, the capital of the restive Balochistan province.
Three others were injured in the two shootings, police said.
The gunmen fled after the attacks.
Balochistan has been rocked by ethnic and sectarian violence over the past few years.
The Taliban, sectarian extremist groups like the banned Lashkar-e-Jhangvi and Baloch separatist groups are active in the province.
On Tuesday, gunmen shot dead three Shia Hazara men in a similar attack in Quetta.
Yesterday, gunmen riding a motorcycle shot dead a man Shia Hazara man in the city.
The Hazara community has repeatedly been targeted in a series of sectarian attacks.
Islamabad: Unidentified gunmen shot dead three members of the minority Shia community and injured three more in two sectarian attacks in Quetta city of southwest Pakistan Saturday, police said.
First Published: Saturday, November 10, 2012, 22:37