MCHENRY COUNTY, Ill. — A man was seriously injured in a deadly wrong-way crash that killed his wife, four children and two others on an interstate in McHenry County.

The crash occurred around 2 a.m. Sunday on I-90 near mile marker 33, roughly 50 miles from Chicago.

Illinois State Police said 32-year-old Thomas Dobosz and his 31-year-old wife, Lauren Dobosz, both from Rolling Meadows, were driving westbound on I-90 near Hampshire in a full-size Chevrolet van carrying five children.

According to ISP, 22-year-old Jennifer Fernandez was driving in the wrong direction on the highway “for unknown reasons,” and collided head-on with the van. Both vehicles became engulfed in flames.

Lauren Dobosz and the five children were killed. The children were ages 5 to 13.

Fernandez, of Carpentersville, also died, police said.

Thomas Dobosz was the sole survivor of the crash and suffered serious injuries.

A neighbor who lives across the street from the couple says they had four children. He believes the fifth child involved in the crash was a friend of their oldest child.

“The kids were very friendly,” David Moreno said. “They were always talkative. We would always run into them at the supermarket.”

WGN News has learned the family was involved in the local cheer program, the Oriole Park Falcons. The team canceled practice Monday to process the loss.

ISP says the crash investigation is ongoing.