A major search is under way after a man was seen in the River Tay near Stannergate in Dundee.
Police are appealing for information to help establish the whereabouts of the man, who was spotted in the water earlier this evening.
A search and rescue helicopter has been scrambled to the area, making long sweeps of the river from Broughty Castle to the road bridge.
The alarm was raised by members of the public to a man “swimming” in the water between Dundee and Broughty Ferry in the Stannergate area at around 5.40pm.
One eyewitness said: “There’s a lot of activity going on.
“The helicopter has been over the area for some time, searching around the Broughty Ferry area and up to Dundee.
“I also saw a Coastguard unit with blue flashing lights checking the area around the Stannergate.”
The man in the water is described as being in his 40s, white, with a bald head. He was wearing a red T-shirt, a black jacket, dark trousers and Converse trainers.
A police spokesman said: “Searches are currently being carried out by coastguard and lifeboat to try and find the man in question, and the Police Scotland helicopter is also expected to attend the area to help the search.”
Officers say the man could be safe and well, but there are obvious concerns for his well-being.
They are appealing for either the man in question to contact police to let them know he is safe and well.
The spokesman said: “Any members of the public who have information or have seen a man matching his description are urged to contact the force on 101.”