There were angry demonstrations after the killings of the Shiites, in what police described as the latest sectarian attack in the volatile southwest province.
The gunmen, who were on a motorbike, fired at a van carrying members of the minority Muslim community in the Speeni Road neighbourhood of Quetta city, the capital of Baluchistan, police official Jamil Kakar told AFP.
"Four people including a woman were killed and seven others were wounded," Kakar said, adding that it appeared to be a sectarian attack.
Afterwards, a policeman was shot dead by Shiite protesters in the Hazara Town neighbourhood of Quetta, where police tried to break up a road block erected by a mob, local police station chief Ameer Mohammad Dasti told AFP.
"Some protesters fired in the air in anger and one of the bullets wounded a policeman, who was taken to hospital but died," Dasti said.
Dozens of other Shiites demonstrated in Quetta`s main Meezan Chowk square and outside the provincial police chief`s office, and torched a motorcycle at a local hospital to protest against the killings, witnesses said.
Human rights groups have heavily criticised Pakistan for failing to crack down on sectarian violence between the majority Sunni Muslim community and Shiites, who account for around 20 percent of the population.
Thousands of people have died in related unrest since the late 1980s.
In a separate incident, gunmen shot dead two employees of the UN Food and Agriculture Organisation (FAO) in Mastung, a city 40 kilometres (25 miles) south of Quetta, police official Shakir Ullah told AFP.
"A driver and a staff member of FAO were killed and another staffer wounded after gunmen fired at their vehicle," Ullah said.
It was not immediately clear why they were targeted and so far no one has claimed responsibility, he said. (*)
Editor: Kunto Wibisono
Copyright © ANTARA 2012
