The annual Paris-Roubaix bicycle race is an institution in France, but it featured an odd new twist this year as a train interrupted the action.

Some of the cyclists weren't able to cross the tracks before a train came by. A few riders proceeded through the crossing even though the safety arms had already been lowered into place.

The Associated Press reports that France's national rail company SNCF has filed a lawsuit, although it does not name a defendant, "leaving it up to investigators to determine how the incident happened and who was responsible."

Race rules prohibit cyclists from crossing train tracks while the safety barriers have been activated. The AP also reports that there were no disqualifications made, but the International Cycling Union could hand out sanctions after reviewing the incident.

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