Tajik authorities say their border guards clashed with militants who crossed into Tajikistan’s Khatlon region from Afghanistan on Tuesday night.

Tajikistan’s State Committee for National Security said in a statement that militants intended to carry out an armed attack on one of the border outposts.

Three militants were killed and two Tajik soldiers died in the clash. From the scene, three firearms—an M-16 rifle and a Kalashnikov assault rifle—three foreign-made pistols equipped with suppressors, ten hand grenades, one night-vision device, explosives, and other military equipment were seized, according to the committee.

This was the third reported attack from Afghanistan into Tajikistan in the past month, with the previous ones targeting Chinese nationals.

The Islamic Emirate previously said it assured Tajikistan it was ready to tighten border security and conduct joint investigations.