Hong Kong pro-democracy activist Agnes Chow was released from prison on Saturday after serving nearly seven months for her role in an unauthorised assembly during anti-government protests in the city in 2019.

The 24-year-old activist had been convicted together with her long-time activist colleague, Joshua Wong, for their involvement in an illegal rally near police headquarters in the Chinese-ruled city.

Wong remains in prison and the reason for Chow's early release after being sentenced to 10 months in jail was not clear. The Correctional Services Department did not immediately respond to a request for comment.

Chow was released from the Tai Lam Correctional Institution in Tuen Mun, in Hong Kong's New Territories district, about 10am (0200 GMT).

She did not speak to media before she was...