The government blacked out all TV channels and blocked popular social media sites like Facebook, Twitter and YouTube to stem the spiralling violence.
The police and paramilitary personnel tried to disperse the protesters who have been blocking main highways leading to the capital Islamabad for more than two weeks to press for the resignation of law minister Zahid Hamid.
The protesters are objecting to changes made in the Khatm-i-Nabuwwat or finality of prophethood oath in the Elections Act 2017 passed in September, alleging the action undermined Islamic beliefs and linked it to blasphemy.
The protesters belonging to Tehreek-i-Khatm-i-Nabuwwat, Tehreek-i-Labaik Ya Rasool Allah (TLYR) and the Sunni Tehreek Pakistan (ST) attacked the house of former interior minister Nisar Ali Khan in Faizabad area of Rawalpindi.
They damaged the gate of his house and tried to enter the premises, but were prevented by police, official said.
Khan is a former minister and his house is located very close to Fiazabad interchanged which has been occupied by the protesters for almost three weeks.
At least one security person was killed and over 150 persons, including protesters and security personnel, were injured, police said.
TV footage showed police firing teargas and security personnel in riot gears charging at the protesters.
Dozens of them were arrested and shifted to various police stations.
Some of the security personnel were injured due to stone pelting by protesters.
According to a security official, more than 8,000 security personnel took part in the operation against around 2,000 protesters.
The operation was still going on and police were facing stiff resistance from the protesters, they said.
Security forces fired in the air and baton charged the protesters who came out in many areas after a crackdown was launched at the Numaish roundabout on the M A Jinnah road.
The protesters had also gathered at Al-Asif square and tried to block the roads leading to Hyderabad, traffic police officials said.
A military spokesman said that army chief General Qamar Caved Bajwa talked to Prime Minister Shahid Khaqan Abbasi on telephone and urged for peaceful solution to the problem.
"At that time some media channels glorified suspected terrorists and vandals and there was a backlash due to this," a source said.
"In such a delicate situation there was also concerns that social networking sites would be used to spread unverified and false news/information and create panic and fear among the people," another source said.
Islamabad city magistrate yesterday issued a warning to protesters to disperse by midnight or face the consequences.
Earlier, IHC last Friday had given a 24-hour deadline to the government to clear the roads which was later extended till Thursday.
However, the court yesterday expressed strong displeasure at the government for failing to take action against the protesters.
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