Two men attacked a lone angler and tried to set him on fire as he fished at a Doncaster beauty spot.
The incident happened around 11.35pm as the man was fishing in the River Don near Sprotbrough Falls – a popular spot for night fishing.
Members of the angling community have spoken of their shock after the attack.
A post circulated on Facebook to warn anglers described the incident.
It said: “They got him from behind, tied wire round his neck, poured lighter fluid and glue over his face and in his mouth and pushed him in the River Don.”
Ian Hurst, secretary of Doncaster and District Angling Association, said: “It’s really shocking. It’s a popular place for anglers and is generally regarded as a tranquil place to fish.
“I was made aware of the incident after one of our bailiffs saw a post on Facebook, so I contacted South Yorkshire Police to see if they were aware of it and find out more information.
“The police confirmed that the post was accurate and said they were taking it extremely seriously.
“At this stage we are not sure if it was a random attack. I’m waiting to speak to the officer to find out what stage the investigation is at.”
A police spokesman said: “At around 11.35pm on Sunday, August 23, it was reported that the man, who was on his own near Sprotbrough Falls, was assaulted by two unknown men.
“It was reported that the men poured a substance on the victim and attempted to set fire to it. As a result, the man entered the water and the offenders left the scene.
“The man, who suffered minor injuries, called police and is helping them with enquiries.”
A post has been put on the DDAA’s website alerting anglers to the incident.
It says: “DDAA have confirmed reports seen on a social media site regarding an incident with an angler on one of the association waters.
“The matter is being dealt with by South Yorkshire Police and is currently under investigation. If any angler witnesses any harassment or anti social behaviour you should contact the police by calling 101, or 999 if the situation is of a serious nature.”
n Police are asking anyone who witnessed the incident or has any information which may help the investigation to contact 101 quoting incident number 1392 of Sunday, August 23.