BEIJING, March 19 (Xinhua) -- China's top environment regulator has urged local authorities to bring those responsible for violence against law enforcement agents in eastern Anhui Province to justice.

On March 12, four law enforcement officers were attacked and injured while gathering evidence of unauthorized production at a textile company in Dangshan County, the Ministry of Environmental Protection (MEP) said Sunday.

The company did not pass environmental impact assessment, the MEP said, calling for a fast investigation and "severe punishment" for the violent obstructors.

Its violation of environment laws should also be dealt with strictly, MEP added.

The watchdog will keep its zero tolerance for breach of law and high pressure of law enforcement, according to an official with the MEP's Bureau of Environmental Supervision.