Nottinghamshire Police are appealing for information after a dog tied to a rock was rescued from the River Trent.
The Belgian Shepherd named Bella - according to her 2010 microchip - was dragged from the water at around 8.45am this morning by a member of the public and taken to a nearby vet.
The canine's lead was attached to a carrier bag which contained a large rock.
Police are now asking anyone with information to come forward, including anyone who recognises the dog or saw anything suspicious.
PC Pace of Nottinghamshire Police said: "This was an evil and nasty thing to do to this poor dog and we are making every effort to find out who is responsible.
A large rock was attached to Bella's lead
"We are lucky that the kind member of the public found and rescued her.
"If anyone has dash-cam or CCTV footage of vehicles in Long Lane that may show who was in the area at the time that would be really helpful."
Bella was discovered in the Farndon area in Nottinghamshire and is currently receiving veterinary care.
PC Pace continued: "We are working with the RSPCA and are conducting microchip enquiries. Her name was recorded in 2010 as Bella on her microchip but it is possible she may be known by another name if her owner has changed since then.
"If anyone recognises her and knows who owns her please get in touch on 101, quoting incident number 103 of 6 January 2020."