A roadside bomb struck a police vehicle in Wana in Pakistan’s Khyber Pakhtunkhwa province, killing four people including two officers and wounding about two dozen others, police said.

Police official Asghar Shah said the blast occurred in Wana, a city near the Afghan border, and that the dead included two police officers and two passersby. He said dozens more were injured in the attack, which targeted the police vehicle.

No group immediately claimed responsibility, Shah said, leaving investigators to look for likely perpetrators. Police officials said suspicion is likely to fall on Tehrik-e-Taliban Pakistan, or TTP, a Pakistani militant group that is separate from but allied with Afghanistan’s Taliban government.

TTP has intensified its campaign against Pakistani security forces in recent years, according to the AP report. Pakistan has also seen a surge in militant violence, a dynamic that has deepened tensions with Afghanistan.

Islamabad accuses TTP of using Afghan territory as a safe haven since the Afghan Taliban returned to power in Kabul in 2021. The Afghan Taliban deny the allegation, the report said.