A canal in a suburb of Buenos Aires, Argentina, turned bright red on Thursday, causing concern among local residents.
Pictures and videos shared on social media showed the strikingly colored water flowing into the Rio de la Plata estuary, which borders an ecological reserve.
Local media reports suggest that the color change may have been due to the dumping of textile dye or chemical waste from a nearby depot.
The Environment Ministry responded by taking water samples from the Sarandí canal to investigate the cause of the unusual color.
Authorities are working to determine the exact source of the contamination.
Residents have expressed their alarm over the potential environmental impact.
