A stream winding through a populous area on the outskirts of Buenos Aires has turned crimson red in recent hours that has sparked fears of industrial chemical dumping.

The Sarandí Canal near Buenos Aires turned bright red, alarming residents and prompting an investigation into potential industrial pollution.

A stream south of the Argentine capital turned a freakish vermilion this week, prompting concerns about pollution. Officials said it could be the result of “some type of organic dye.”

The Argentina Environment Ministry said in a statement that it had taken water samples from the 'bloody river' and said that the reason behind this could be the presence of an 'organic pigment'.

This water is raising a red flag. A canal in Argentina mysteriously turned bright red on Thursday, alarming residents who were woken up by its strong odor. “The smell woke us up. In the daytime, when we looked at this side of the river,