Mystery as man found in Leeds-Liverpool canal at Kirkstall
Police have urged anyone who saw how a man came to be found unconscious in a canal to come forward.
The 51-year-old man, from Horsforth, was found in the Leeds-Liverpool canal near the Leeds and Bradford Road in Kirkstall on Saturday evening.
He was taken by air ambulance to Leeds General Infirmary where he remains in a critical but stable condition.
West Yorkshire Police said they were "keeping an open mind" as to how the man came to be in the canal.
Det Ch Insp Simon Bottomley, from West Yorkshire Police's homicide and major inquiry team, said: "It may have been an accident or he may have been the victim of an assault."
Officers said their inquiries suggested the man had been cycling along the towpath before being found, although his bicycle - a brown Apollo Vortice mountain bike - had not been found by police divers.
The injured man was described as white, 6ft 2in (1.88m) tall, with short brown hair and a tanned complexion.
He was wearing a bright orange and red T-shirt, black shorts, white trainers and grey fingerless cycling gloves.
Anyone who saw the man cycling on the towpath is being asked to contact West Yorkshire Police.