UMNO Selangor chairman Tan Sri Noh Omar challenged Selangor Menteri Besar Datuk Seri Azmin Ali to lodge a police report over his claim of sabotage in the Semenyih river pollution.

"I challenge Azmin to show proof of his claims that there is sabotage in the issue of river pollution," he told reporters at Parliament lobby today.

"I want to tell the Menteri Besar, this is not how UMNO play politics. We fight for the people and do not burden them," he said.

Azmin had earlier claimed there was sabotage element in the river pollution and blamed it on the Barisan Nasional and UMNO.

The Semenyih water treatment plant was forced to shut down again following contamination believed to have originated from industrial area in Nilai, Negeri Sembilan.

Following that, Several areas in Petaling, Hulu Langat, Kuala Langat and Sepang districts faced water disruption since 7.30am yesterday.