The LaSalle County Coroner's Office says a body was recovered from the Illinois River, southwest of Ottawa on Saturday.
In a statement on Monday, the coroner's office says the male decedent was identified as 41 year-old Nicholas Williams of Matteson.
He was found in the river near the 1400 block of Route 71.
Additional information has not yet been released. The coroner's office says an autopsy was conducted as part of the investigation with further information to be released when it becomes available.
The coroner and the Illinois Department of Natural Resources are continuing to investigate.