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SOUTH DEERING, Illinois (WGN/CNN) — A sinkhole swallowed three cars early Thursday in a South Chicago neighborhood.

One person was taken from the hole to a local hospital in serious-to-critical condition, according to the Chicago Fire Department.

The fire department responded to the scene around 5:30 a.m., when two cars were inside the hole. A third one slid into it after crews arrived.

There was heavy rain and flooding in the area overnight — but it’s not clear if that caused the ground to open up.

Watch the incredible video from WGN above this story.