Beijing (CNN) Authorities at China's prestigious Peking University have tightened their grip on campus, following a nationwide government crackdown aimed at silencing left-wing youth advocates for labor rights.

Peking University claimed to have uncovered and eliminated an "illegal organization" with a goal of subverting state power that had infiltrated the school's Marxist Society, according to a message sent to students Wednesday and shared with CNN.

The university, long a haven for liberal intellectuals and known for its history of student activism, has been regularly ranked one of the best in the country.

In a separate memo, the Peking University committee of China's ruling Communist Party declared the establishment of an "internal control and management" office to enforce discipline on campus, including day-to-day inspections and patrols on school grounds.

The Beijing-based university warned that students would "bear consequences" if they decided to become involved or support labor rights movements, according to another message sent to students on Wednesday and seen by CNN.

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