The blood comes from animals sacrificed for the festival, and had mixed with floodwater in parts of the Bangladeshi capital.
Why is this happening?
Nearly 100,000 livestock were sacrificed in Dhaka this year, according to BBC Bengali, mainly on the streets or at underground car parks in residential buildings.
At the same time, there was heavy monsoon rain for most of the day on Tuesday, flooding many parts of the city. Flooding has long been an issue in the older parts of the city with poor drainage systems.
