At least four members of Pakistan's Shia Hazara community, including a 12-year-old boy, were killed and two others injured in an attack in Kuchlak town near Quetta.
"Eight members of a Hazara family were travelling to Quetta from Chaman in a vehicle. They had stopped near a petrol pump to take a brief rest when two men on a motorcycle appeared and opened fire on them," the Dawn quoted official sources, as saying.
Three people were shot dead and the 12-year-old succumbed to injuries during treatment at the trauma centre of Quetta's Civil Hospital, the source added.
The attackers used the automatic weapons for killing them, while two members of the family escaped unhurt, Kuchlak Deputy Superintendant of Police (DSP) Tanvir Shah said.
The security forces have launched a search operation in Kuchlak and adjacent areas to nab the culprits.
Earlier, Balochistan National Party (BNP) leader Malik Naveed Dehwar was shot dead along with his guard in Quetta's Arbab Khan Road.