2 sheens reported on Mississippi River, water safe to drink in Minneapolis and St. Paul

Officials are investigating after two sheens were reported on the Mississippi River this week.

The Fridley Fire Department initially reported a sheen in the river near the Highway 610 Bridge in Coon Rapids on Tuesday afternoon.

As the sheen traveled downstream, officials with the Minnesota Pollution Control Agency (MPCA) tracked the substance, which is unknown at this time.

Crews also used booms to divert the sheen from the city water intakes in the Twin Cities, according to the MPCA. The cities of Minneapolis and St. Paul both said that their water remains safe to drink.

The next morning, a smaller sheen was reported near the west shore of the river near West Coon Rapids Dam Regional Park.

In an update on Thursday, the MPCA said the Minnesota Department of Health has been testing water samples and all of the samples have come back negative for substances that would pose a threat to the safety of municipal drinking water systems.

Authorities say that no additional sheens have been seen as of Thursday evening.

Officials are investigating whether the two sheens are related.

Check back for more updates on the incident.