Fighters linked to ISIS terrorist group have killed three Libyan security personnel in the country’s southwest, the interior ministry said Thursday.

The attack on Wednesday, in the desert some 700 kilometers (430 miles) south of Tripoli, “targeted a patrol of the Umm al-Aranib Martyrs’ Brigade, killing three of its members,” the ministry said in a statement.

It added that government forces had “killed four members of Daesh (an Arabic term for ISIS) and destroyed their vehicle.”

It said a search was underway for other “terrorists” who had fled.

It said the terrorists were attempting to “undermine stability and terrorize civilians.”

ISIS had on Monday claimed it had attacked the same brigade in the same area a week earlier, killing two members.

The Umm al-Aranib Martyrs’ Brigade is largely made up of members of the long-marginalized Tebu ethnic group.

ISIS, encouraged by victories in Syria and Iraq, took advantage of the chaos to seize parts of the country’s north and east, but after a string of offensives saw it kicked out of its final bastion Derna in 2018.

The group has continued to carry out small-scale attacks.