Section 144 has been enforced in Kurram district for a period of two months, a day after Deputy Commissioner (DC) Javedullah Mehsud was injured.
The Home Department has issued a formal notification regarding the imposition.
Section 144 would prohibit the public display of weapons, aerial firing, and gatherings of more than five individuals.
At least five people including personnel of security forces and DC Kurram were injured in the attack.
The district administration said in a statement that he got minor injuries in the shooting and was taken to the Alizai hospital in Lower Kurram.
Prime Minister (PM) Shehbaz Sharif remarked that the attack was an attempt to undermine the peace agreement in the region. He emphasised that those who attempt to disrupt peace and order will not succeed.
The prime minister also assured that the government and security forces are actively engaged in combating terrorism and ensuring the safety and security of the people.
What has happened in Kurram?
Kurram has been in the spotlight for months now as the persistent violence in the district took more than 130 lives, with a peace deal finally struck on January 1 after around 50-day-long negotiations between tribal elders.
It was hoped that the agreement would hold as the violence forced the government to block the Tal-Parachinar Road, which led to the shortage of food, medicine, and other essential items in the district.
In November, gunmen opened fire on two separate convoys of Shia Muslims travelling with police escorts in Kurram, killing almost 40 people.