At least four Pakistani police officers were shot dead on Saturday in the capital of the Baluchistan province when their vehicle attacked by unidentified gunmen.
Pakistani officials said three of the officers died in the spot, and the fourth one died while being treated in the hospital.
The attackers fled the scene after the incident and there has been no claim of responsibility.
The ambush follows a deadly bus attack that killed 22 passengers last week.
Baloch separatists, are demanding greater autonomy and control over the province’s gas and mineral resources claimed the responsibility for the attack on the bus.
Pakistani PM Nawaz Sharif “strongly condemned” the killings and said “such incidents cannot weaken government’s resolve in eliminating the menace of terrorism and extremism,” in a statement.
Pakistan’s restive southwestern Balochistan province has long been plagued by sectarian and separatist violence. The latest wave of attacks intensified after the killing of Baloch leader Nawab Akbar Bugti in 2006 by the army.
Baluchistan is the largest of Pakistan's four provinces, but residents have long complained they do not receive a fair share of the province’s wealth.