DAMASCUS, Nov. 27 (Xinhua) -- At least 485 people have died as a result of a tough humanitarian situation in a refugee camp run by Kurdish forces in northeastern Syria, a war monitor reported Wednesday.

These people are largely family members of Islamic State (IS) militants, who sought refuge in the al-Hol camp in the northeastern province of Hasakah following the successive defeats of the IS militants by the U.S.-backed Kurdish forces, said the Syrian Observatory for Human Rights.

The UK-based watchdog group said 426 of those dead were children under 18, most of whom were from foreign nationalities such as Britain, Russian, Portuguese, and many other nationalities.

It said that the people in the camp are suffering a tough situation with the lack of medicine and proper food, calling it the "camp of death."

Al-Hol is a camp that mushroomed earlier this year to more than 74,000 refugees and displaced people, according to the International Committee of the Red Cross.