KIRKUK, Iraq — The Islamic State freed about 350 members of Iraq’s Yazidi minority on Saturday, delivering them to safety in the country’s northern Kurdish region.

Almost all of those released were elderly, disabled or unwell, and they included several infants with serious illnesses, according to a Reuters reporter who saw them arrive in the Kurdish-controlled city of Kirkuk.

Islamic State militants attacked the Yazidis in northwest Iraq last summer, killing or capturing thousands of them.

Those who could flee escaped to the autonomous Kurdistan region, where many are living in camps along with other religious and ethnic minorities, as well as Sunni Muslims displaced by the militants.