CHICAGO (CBS) — A SouthWest Service Metra train derailed Friday afternoon after striking a semi truck near Wrightwood around 3:20 p.m., Metra confirmed.

The incident happened south of Western off Columbus, north of the Wrightwood stop.

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Metra officials say the semi was using a private crossing at the Norfolk Southern landers yard.

Inbound service was still suspended at 10 p.m.

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Chicago Fire officials said 34 passengers were being checked out, but no one had been transported to a hospital shortly before 4 p.m.

The front car of the train derailed but was still upright, Metra said.

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The train was scheduled to arrive at Chicago Union Station at 3:48 p.m.