People have been told not to swim at the beach in Swansea following a discharge of sewage.
The discharge of what is believed to be sewage is coming from an unknown source and is impacting the River Tawe near Swansea city centre.
Natural Resources Wales says there are concerns the discharge may affect water quality at the designated bathing water in Swansea Bay, and as a precaution people are being advised not to bathe at the beach while the problem is ongoing.
Read more: See all our Swansea stories on our dedicated homepage
A spokesman said: "Swansea Council has been informed of the risk and the council will be placing signs at the beach to advise people not to swim.
"Welsh Water is assisting to find the source of the pollution within the complex network of underground streams that drain into the river Tawe from the dense urban areas of the city".
The discharge is not the first time beaches in Swansea have been affected by sewage.
In July, tourist hotspots Langland and Caswell both experienced sewage pollution.
Sea quality campaigners Surfers Against Sewage also warned people to stay out of Swansea Bay following a discharge.
All those three incidents were blamed on Storm Evert, causing sewage system overflows.
Get Swansea stories straight to your inbox with our newsletter.
