With the city still on high alert following the shooting spree in its Christmas market earlier this month, police shepherded travelers out of Strasbourg's railway station at about 6:15 p.m. local time and called in the bomb squad.
"Ordnance disposal teams are on hand to remove the suspicious package and traffic will gradually resume after their intervention," police reportedly said.
Social media posts showed dozens of people crowded outside the glass facade of the railway station, where temperatures were just below freezing.
France 3 reported that 30 trains were impacted by delays, including 25 at various train platforms and five stopped along the line.
The December 11 terror attack in the city killed five and wounded 12.
The city is both the capital of Grand Est region and the home of the European Parliament.