CHICAGO (CBS) — A two-car crash on the Dan Ryan Expressway Saturday morning near the South Side Chatham neighborhood sent at least seven people to hospitals, including four children.

The cars were traveling south on Interstate 94 at 12:23 a.m. when they crashed near 75th street, according to Chicago Fire Department spokesman Larry Langford.

Two people were taken to hospitals in serious-to-critical condition, three in fair-to-serious condition and two in good condition, Langford said.

The children in the crash, all under the age of five, were not buckled in or in any type of car seat. They are, however, expected to be OK.

One adult was ejected from one of their cars.

Illinois State Police did not immediately have more details on the crash. It is unknown if alcohol is suspected in the crash.

(Source: Sun-Times Media Wire © Chicago Sun-Times 2017. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)