Video footage of a man committing a fly-tipping offence has been released in an appeal for information.
The streetscene enforcement team at East Riding of Yorkshire Council has released the video as part of its investigations and is asking for the public's help to try to identify the man responsible for the incident, which happened in Goole.
The video footage shows a man carrying and dragging a double mattress into a back alley, between Spencer Street and Tennyson Street, and then dumping it there.
The offence took place on Saturday 27 November last year, at 10.58am.
The suspect appears to be white, of large or heavy build, with dark hair and a stubbly beard. He was wearing a black t-shirt, grey jogging bottoms and trainers. He was on foot and coming from the direction of Weatherill Street.
He was caught in the act by one of the streetscene enforcement team's own CCTV cameras. The team has a number of the cameras around the East Riding in fly-tipping hotspots to record offences.
Anyone who can help identify the suspect is encouraged to contact the streetscene enforcement team on 01482 393939 or online at www.eastriding.gov.uk/fly-tipping.
Anyone caught fly-tipping could be ordered to pay a £400 fixed penalty notice or could face an unlimited fine or even prison if the case is taken to court.
Paul Tripp, head of streetscene services at East Riding of Yorkshire Council said: "We are very interested to hear from anyone who can help us in our investigation.
"Fly-tipping in the back alleys of Goole has been a particular problem for us. Some people think they can dump anything next to someone's wheelie bins and the council's refuse collectors will take it away.
"But this is a criminal offence and costs the council hundreds of thousands of pounds each year to clear up.
"We need the public's help to prevent fly-tipping from happening. In the meantime, we will investigate every incident and always take action when we can."
Second appeal - Pig's trotters found among fly-tipping
The streetscene enforcement team is appealing for information about a second, particularly unsavoury fly-tipping incident, which happened in Newsholme, near Howden.
A pair of pig's trotters, a chair, children's toys, plant pots, plastic sheeting and wrap, and a bag of faeces, were found dumped at the side of a road, on the bend of Rowlandhall Lane and Green Lane.
They are believed to have been dumped there between Friday 17 to Sunday 19 December last year.
Paul Tripp said: "Our streetscene enforcement team has to investigate all sorts of things that are fly-tipped, but the contents of this incident were particularly nasty.
"We would really like to find the person responsible and if anyone can help with information, I would urge them to come forward and contact the team."
The council continues to remind residents they are responsible for disposing of their own waste properly and legally by using their household bins or by taking it to their local household waste recycling site.
For larger loads they can also hire a licensed waste carrier to take the rubbish away, or they can use the council's own bulky waste collection service.
Residents can report any fly-tipping or suspicious activity to the council on 01482 393939, or online at www.eastriding.gov.uk/fly-tipping
People are asked not to touch any fly-tipped waste or approach anyone they see fly-tipping.
For guidance on how to check if a person is a licensed registered waste carrier visit the council's website www.eastriding.gov.uk/fly-tipping
To find your nearest household waste recycling site visit the council's website www.eastriding.gov.uk/recycling