The emergency services were this afternoon scrambled to a stretch of the Manchester Ship Canal near Eccles.
They were joined by a specialist underwater search and marine unit as they focussed on a stretch of water either side of Centenary Bridge, which crosses the canal between Eccles and Trafford Park.
The search teams could be seen entering the water and focussing on a stretch of water either side of the bridge.
Try MEN Premium for FREE by clicking here for no ads, fun puzzles and brilliant new features.
The response of the emergency services began this afternoon, and it included Greater Manchester Police and Greater Manchester Fire & Rescue Service.
The North West based underwater search team also joined the operation close to Centenary Way.
Video from the scene showed a boat being lowered into the water. The emergency services' response was not affecting traffic in the area.
A spokesperson for Greater Manchester Fire and Rescue Service (GMFRS) said: "At around 1.55pm on Monday 26 June, fire crews were called to support Greater Manchester Police (GMP) with a water rescue incident on the Manchester Ship Canal near the Centenary Bridge.
"Fire engines from Agecroft, Moss Side and Eccles stations, as well as the technical rescue unit from Ashton and the water incident unit from Eccles, quickly attended the scene.
"Firefighters from the water incident unit used two rescue sleds to assist with the search of the canal and neighbouring banks. The incident has now been handed over to the police underwater search unit.”
The M.E.N. has asked GMP for a comment.