Marinette County Chief deputy Jerry Sauve (SOH'-vee) says it's unclear whether charges will be filed against 38-year-old Scott J. Johnson before that court appearance.

Johnson is accused of shooting the four as they swam in the Menominee River on Thursday. Authorities don't know why the four were shot.

A 24-year-old woman has alleged that Johnson sexually assaulted her at the same site one day earlier. Johnson hasn't been charged in that case and authorities aren't sure whether it's related to the shootings.