Four former Hong Kong pro-democracy lawmakers were released from prison Tuesday after completing their sentences for allegedly attempting to overthrow the government of the special administrative region of China.

The first batch of individuals jailed in the landmark Hong Kong national security trial of “47 democrats” accused of conspiracy to commit subversion was freed on Tuesday after being behind bars for more than four years.

Four former Hong Kong lawmakers have been released after spending more than four years in prison for their conviction under a Beijing-imposed law that crushed a once-thriving pro-democracy movement.