LOS ANGELES (CBSLA.com) — Authorities are investigating the cause of a Metrolink train derailment at Union Station early Tuesday evening.

The incident occurred near Bauchet and Vignes streets shortly before 5 p.m., according to a Los Angeles City Fire spokesperson.

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The train remained upright and passengers were offloaded by responding personnel.

No injuries were reported.

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All Metrolink trains arriving to and departing from Union Station were delayed as a result of the derailment.

Crews were still removing the cars late into the evening.

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Normal service is expected to resume Wednesday morning.