PRISTINA, Kosovo — The authorities in Kosovo said on Saturday that more than 100 of their citizens, mostly women and children who were relatives of jihadists, had been flown home from Syria under heavy security with the assistance of the United States.

Justice Minister Abelard Tahiri told journalists that “a planned operation to bring back some of our citizens from Syria ended successfully.” Officials said four men suspected of having been fighters with the Islamic State militant group, 32 women and 74 children were among the group. The four suspected fighters were arrested.

Nine of the children had lost parents during the fighting in Syria. Other details were not immediately released, officials said, because of “the sensitivity of the case.”

Two buses holding the women and children stood for hours at the Kosovo airport before being transported under police escort to army barracks just outside Pristina, the capital. The group was taken to a center in Vranidoll, north of the city, before being sent to homes in the next 72 hours, officials said.