CHICAGO (CBS) — State police are investigating a fatal crash on I-94 in South Holland, which shut down two major entrance ramps to the expressway.

The accident happened at 12:20 p.m. in the inbound lanes, just south of 159th street.

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The crash involved three vehicles, and police say two people were killed.

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As of 2:30 p.m. state police say the ramp from I-80 eastbound to inbound I-94 was closed. The northbound 394 ramp is also closed.

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All lanes were opened as of 3:30 p.m.