ISLAMABAD — Gunmen killed three police in an overnight attack in northern Pakistan, and a suicide bomber wounded three Chinese engineers and three paramilitary guards in a separate incident, officials said Saturday.

Faizullah Faraq, spokesman for the local government of northern Gilgit Baltistan territory, said one of the gunmen who attacked a police post was killed in the ensuing shootout late Friday. Another two police were wounded.

The suicide bomber struck near a bus carrying Chinese engineers from Baluchistan to Karachi on Saturday. Hashim Ghilzai, a senior official in the region, confirmed the six wounded. He said the attacker was in a parked car who blew himself up when the bus got closer to him in the Dalbandin area.

The Baluch Liberation Army, a separatist group, claimed responsibility for the suicide attack — the first time any Baluch separatist group has taken responsibility for a suicide attack.

BLA spokesman Junaid Baluch in a statement on the group’s webpage that more such attacks would be carried out on Chinese involved in “exploiting the resources of Baluchistan.”

The southwestern province is the scene of a low-level insurgency by Baluch separatists who wants greater share from provincial resources or outright autonomy from Islamabad.

Militants in Pakistan carry out near-daily attacks, mainly targeting security forces. Most of the attacks have been linked to the Pakistani Taliban and other Islamic extremists.

Copyright 2018 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.