This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

BARLETT, Ill. — One person is dead and another is critically injured after a rollover accident in northwest suburban Bartlett.

An SUV rolled over on route 20, near Naperville Road.

Two people were thrown out, and one of them was trapped underneath. One of them was taken to the hospital in a helicopter. At this time, it’s unclear which person has died.

Four other people are in the hospital with injuries that appeared not to be life-threatening.

The cause of the crash is under investigation.

Police have closed Route 20, from Sutton Road to Lambert Avenue.