A large number of PTI activists have gathered at the Khazai Chowk near the western bypass of Quetta chanting slogans against the government for allowing NATO to use the land route to transport supplies to forces in Afghanistan.
PTI Chairman, Imran Khan is expected to address the gathering via telephone after which the sit in is scheduled to end.
Besides normal traffic, the movement of vehicles carrying supplies for NATO troops has also been stopped.
The participants also demanded the implementation of the Parliament's resolution to stop drone attacks in Pakistan.
Earlier this year PTI organized similar sit-in(s) in Peshawar and Karachi blocking NATO supply routes, protesting US intervention in Pakistan, drone strikes and the government's war on terror policy.
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