A Pakistan separatist group warned Wednesday of more deadly attacks on Chinese targets, a day after a woman suicide bomber killed four people — including three teachers posted from Beijing.

The Baloch Liberation Army — one of several groups fighting for independence in Pakistan’s biggest province — claimed responsibility for Tuesday’s blast, saying it was the first time a woman had “self sacrificed” for the group.

Chinese nationals and interests have regularly been targeted by separatists in Balochistan, where Beijing is involved in lucrative mining and energy projects.

“Hundreds of highly trained male and female members of the Baloch Liberation Army’s Majeed Brigade are ready to carry out deadly attacks in any part of Balochistan and Pakistan,” spokesman Jeeyand Baloch said in a statement published in English.

He threatened Beijing with “even harsher” attacks unless the neighboring country halted its “exploitation projects” and “occupying of the Pakistani state.”

China’s Ministry of Foreign Affairs urged Pakistan to ensure the safety of all Chinese citizens and interests in the country and to launch a full investigation.

It also advised citizens to “take strict precautions, and do not go out unless necessary.”