A post-mortem examination is due to take place today on the body of a man found in the River Nene.
The body was found near The Lakes business park in Northampton about 1.30pm on Friday.
A police spokesman said the man would not be formally identified until later in the week.
On Friday, access to the path alongside the River Nene was cordoned off by police, opposite Northampton Old Scouts RFC, in Rushmere Road.
Several police cars and fire engines were at the scene.
From the other side of the Nene, a body was clearly visible at the bottom of the banking, and the emergency services were carrying a stretcher to the scene. A large cordon was also in place along the towpath.
A police spokesman said it was “complete speculation” at this stage that it was that of Polish man Artur Liana, aged 32, who went missing on December 22 last year.
Anyone with information can call Northamptonshire Police on 101. Alternatively, information can be given anonymously to Crimestoppers on 0800 555 111.