Routes to Islamabad and Rawalpindi closed with containers, and heavy law enforcement contingents have been deployed in response to PTI's demonstrations.

No talks with PTI underway, strict action if red lines crossed: Mohsin Naqvi-- Police constable dies, Rangers official injured in clashesISLAMABAD: Thousands of Pakistan Tehreek-e-Insaf (PT

Pakistan's government has vowed to take every action to control the situation as the government has authorised shoot-at-sight orders.

The situation escalated when miscreants rammed a vehicle into Rangers personnel during the protest in Islamabad

Tens of thousands of PTI supporters marched on Islamabad demanding Imran Khan's release and reversal of a constitutional amendment. Clashes erupted with police, who used tear gas and made arrests. The government vowed to stop the protest,