At least 12 police officers were killed and five others injured in a car bomb and gun attack on a checkpoint in Pakistan’s northwestern Bannu district on Saturday night, officials said Sunday. The assault occurred in the Fateh Khel area when a suicide bomber drove an explosives-laden vehicle into the police post, followed by multiple armed assailants entering the site, according to Bannu police officer Muhammad Sajjad Khan.

Officials reported that the attackers used heavy weapons and small drones during the assault and took police weapons while retreating. One officer remains missing. The attack is part of a recent surge in militant activity in Khyber Pakhtunkhwa province, which has strained relations between Islamabad and Kabul.

Authorities noted that similar incidents have increased in Bannu and other border regions in recent years. Afghanistan’s Taliban government has denied Pakistan’s accusations that militants use Afghan territory as a safe haven, but tensions between the two neighbors have continued to rise.