Roads in Dhaka, India turned into rivers of blood after Muslims slaughtered thousands of animals during the Islamic holiday, Eid-al-Adha.

Heavy rains on Tuesday, combined with the city’s poor drainage system, flooded the streets and the water then washed all the animal blood into the streets as well, with people wading and driving right through it.

Still, the slaughter continued.

According to RT News, the city’s waste management official said “waterlogging has been a problem for a long time” and they are working to resolve the issue.  Local citizens have criticized the city over the drainage and clean-up problems, but the officials have blamed residents for slaughtering the animals close to their homes instead of at the designated locations.

“Last year the city corporations launched a mass campaign to encourage people to use the designated spots and that caught our eyes. I went to a spot in Mohammadpur last year, but this year, I don’t even know where the spots actually are,” one resident told The Dhaka Tribune.

Other people pointed out that the chosen spots were too far from their homes.

Eid celebrations began Monday and continue until Thursday. The religious festival is also known as the Feast of Sacrifice and commemorates the Prophet Abraham’s willingness to sacrifice his son to Allah.

Elsewhere, in Moscow, about 95,000 Muslims flooded into the city Monday morning to attend prayers for the holiday at 38 different mosques in the area, with some streets having to be closed off.