Pakistani religious parties have offered blood money to the family of slain Punjab governor Salman Taseer to pardon his killer.
The apex court ordered the government to act against those propagating 'hatred, extremism and terrorism'.
Pakistan on Monday executed former police commando Mumtaz Qadri, who brutally assassinated former liberal Punjab governor Salman Taseer for seeking reforms in the country's controversial blasphemy laws, triggering nation-wide protests by Islamists who called it a "black day".
Pakistan called in the Army to restore order after violent clashes.
About 2,000 activists of Tehreek-i-Khatm-i-Nabuwwat, Tehreek-i-Labaik Ya Rasool Allah and the Sunni Tehreek Pakistan for more than two weeks have been blocking the Islamabad Expressway and Murree Road that connect Islamabad with its only airport and the garrison city of Rawalpindi.
Pakistan's law minister Zahid Hamid on Monday quit as the government "surrendered" to hardline religious groups, who called off their violent protests in Islamabad that had left six people dead and hundreds injured.