Bangladesh’s High Court has asked authorities to shut down 231 factories surrounding the highly polluted main river in the nation’s capital, lawyers and activists said Tuesday.

Manzil Murshid, who filed a petition with the court seeking its intervention, said the factories are mainly small dyeing, tanning and rubber plants operating without approval from the Department of Environment. Such factories often are able to operate with the backing of influential politicians or by bribing government officials.

The court’s decision Monday on the factories near the River Buriganga was hailed by environment activists despite some previous court orders that were not carried out by government authorities, Murshid said.

Murshid represents Human Rights and Peace for Bangladesh, a domestic advocacy group.

He said the decision came after the environment department submitted a report on 231 factories that operate illegally and contribute highly to the pollution. The court also asked the officials to prepare “a complete list of illegal factories or factories without effluent treatment plants” operating in and around Dhaka within three months.

“This is a good decision. The court has asked the authorities to disconnect water, electricity and other utility services for factories that are polluting the Buriganga,” he told The Associated Press on Tuesday.

Amatul Karim, who represented the Department of Environment in the case, said the court’s order came after a thorough examination of the history of the factories, the level of pollution of the river and overall damage to the environment.