A Hong Kong appeals court jailed three leaders of the Chinese-ruled city's democracy movement for six to eight months on Thursday, dealing a blow to the youth-led push for universal suffrage and prompting accusations of political interference.

Joshua Wong, 20, Alex Chow, 26, and Nathan Law, 24, were sentenced last year to nonjail terms including community service for unlawful assembly, but the Department of Justice in the former British colony applied for a review, seeking imprisonment.

Wong was jailed for six months, Chow for seven months and Law for eight months. Law had been the city's youngest ever democratically elected legislator before he was stripped last month of his seat by a government-led lawsuit.