Police said four others were injured in the attack near York Toll Plaza in the district, Geo News reported.

After the shooting, unknown assailants ran away.

On 18 April, five customs officials and one civilian were killed in Sam district when unidentified assailants attacked a department vehicle in Darban tehsil of the district. After the attack, the driver of the Customs Department vehicle lost control and collided with another vehicle, resulting in the death of the civilian.

Prime Minister Shehbaz Sharif strongly condemned the attack and reiterated that such cowardly actions cannot shake the government's resolve and the fight against terrorism will continue until their complete eradication.

Expressing his condolences to the families, the PM said it is now the responsibility of the government to take care of the bereaved families and asked the Chairman of the Federal Board of Revenue (FBR) to provide relief to them, P Office Media Wing A Press Said in the release. Instructed to prepare the package.

Dera Ismail Khan is one of the most terrorism-affected districts of the province along with Peshawar, Khyber, Bajaur and Tank and North and South Waziristan.