Jimmy Lai, Hong Kong's pro-democracy media tycoon, has won an appeal against a fraud conviction in 2022, which had seen him sentenced to nearly six years in jail.

On Thursday, Hong Kong's Court of Appeal quashed the convictions of Lai and another defendant who had been accused of illegally subletting office space.

But the 78-year-old will remain in prison. Earlier this month, he was sentenced to 20 years in jail for colluding with foreign forces under the city's national security law.

Lai, a British citizen, is a fierce critic of Beijing and is one of the biggest figures in Hong Kong's pro-democracy movement. He has been detained since 2020.

In 1995, he founded Apple Daily, a local tabloid that was critical of Beijing and became Hong Kong's largest pro-democracy paper. The paper was shuttered in 2020 after Lai and other key staff members were arrested.