Virginia Railway Express officials said some of its trains were running late Friday morning,  because of “empty canisters” that were reported on the tracks just north of Manassas Park.

VRE said train 324 is approximately roughly 20 minutes behind schedule and train 326 is also likely to experience delays as police and crews inspect the tracks.

The railway service saw a 31 percent drop in ridership during the two-week federal government shutdown as fewer workers headed to the office. That translated to 6,000 fewer riders per day.

Commuters who want to avoid the delays may travel to neighboring Fairfax County and take Metrorail instead, VRE officials said. Commuters can board a Metro train at “no additional charge by presenting their validated VRE ticket or a pass to a Metro station manager,” according to VRE officials.