Feb. 25 (UPI) -- Syrian officials announced Wednesday that there was a "mass escape" last month from the country's Kurdish-controlled al-Hol camp, which held ISIS-linked families.

It's believed that thousands may have escaped, CNN reported.

The Wall Street Journal reported that about 15,000 to 20,000 people, including ISIS affiliates, were at large following the escape from al-Hol, citing U.S. intelligence agencies, CNN reported. The United Nations said al-Hol camp held more than 30,000 people.

"When our forces arrived, they found cases of collective escapes due to the camp having been opened up in a haphazard manner," Syrian Interior Ministry spokesperson Noureddine al-Baba said at a press conference Wednesday.

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