Palpa, Nov. 16 -- The water in Tinau river, which originates in Palpa, has turned muddy and black in recent days, with photos and videos of the discoloured water going viral on social media. Police said the landslide at the river origin caused the water to turn black.

A police team from the Purvakhola Area Police Office visited the landslide site on Saturday. Senior Police Head Constable Netra Bahadur Bhat Chhetri said that although the water source at the site is small, it carried black silt downstream.

Raj Kumar Panthi, ward 1 chair of Chidipani, of Mathagadhi Rural Municipality, said the river had been flowing muddy and black for several days.

"At first, it seemed normal because of embankment work upstream, but as the flow continued...