Gunmen stormed a home in Quetta today and killed six Punjabi workers who were painting it, and wounded three others.

Police say it is the second apparent ethnic-based attack of the day.

Senior police official Hamid Shakeel said unknown gunmen stormed a home in Quetta, the capital of restive Balochistan province, and killed six workers who were painting it. Three others were wounded. All the victims were from the province of Punjab.

Earlier Saturday, gunmen singled out non-ethnic Baloch passengers traveling on a bus in Aab-e-Ghum, a town about 50 kilometers away, killing 10 and wounding five.

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“A group of 30-35 gunmen stopped the bus in Aab-e-Gum area, off-loaded passengers at gunpoint and shot dead 10 of them,” top provincial home department official Akbar Hussain Durrani told AFP.

He said the bus was traveling to Quetta from the eastern city of Lahore and all those killed in the attack were Punjabi-speaking people.

No group has so far claimed responsibility for the attacks.

A nationalist movement led by armed ethnic Baloch groups has long sought greater provincial autonomy from the central government. Some Baloch organizations are also demanding self-determination.