The Israeli Defense Forces (IDF) reported that it observed and killed an armed group of four people who approached the Israeli border fence with Syria and planted explosives.

Maglan Special Forces troops had the group under surveillance. The SF operators opened fire with machineguns and called in an unidentified aircraft that fired a missile at the individuals killing all four after they planted the explosives, IDF Spokesperson Hidai Zilberman said in a statement Monday morning.

“I believe in the coming days we’ll know better about [sic] what organization they were a part of,” Zilberman said.

The IDF said that troops who searched the area afterward found a weapon, as well as a backpack with several more explosives that were ready to be used.