Multi-car crashes on Dan Ryan investigated

April 6, 2014 (CHICAGO)

There were two separate crashes, at around 3:00 a.m., involving seven vehicles in all. The first crash involved four cars and just minutes after, three other vehicles crashed.

Some people were treated, but all injuries were minor.

Police are not calling it a chain-reaction crash, but they say it's possible the first crash triggered the second one.

The Dan Ryan is back open to traffic Sunday afternoon.

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