MINNEAPOLIS (WCCO) – Several cars of a Union Pacific train derailed along the St. Croix River early Tuesday morning.

According to the Union Pacific Railroad, around 2 a.m. seven empty cars derailed near Bayport following reports of debris on the track.

READ MORE: Sign Bearing George Floyd's Name Unveiled At 38th And Chicago

There were no injuries to the crew or public.

No hazardous materials were involved.

READ MORE: 'It's Bizarre': Southern Minnesota Ghost Town Still Attracting Summer Visitors

Union Pacific representatives said the train was headed from Altoona, Wis. to St. Paul and was carrying mixed freight.

Crews are currently working to remove the cars. The railway hopes to reopen the track Tuesday night or early Wednesday morning.

MORE NEWS: Sign Bearing George Floyd's Name Unveiled At 38th And Chicago: 'This Is Just Another Step Forward'

The cause of the crash is currently under investigation.