Mysterious white foam draws crowds on Nigerian highway

Nigeria's environmental agency has launched an urgent investigation after a strange white, foamy substance appeared on a major highway, sparking a public spectacle and raising safety concerns.

The agency has advised members of the public to avoid contact with the substance, the water, and the surrounding soil until the investigation is concluded, in order to prevent possible exposure to hazardous materials.

The agency said samples of the foamy substance, as well as soil and water from a nearby stream, had been collected for laboratory tests to determine their composition and potential environmental impact.