Hong Kong student leader Joshua Wong urged pro-democracy protesters to regroup in the heart of the city Tuesday, less than a day after he announced he would go on hunger strike to demand electoral reform.

Wong, 18, also urged the Hong Kong government to resume dialogue with students in the Chinese-controlled city a day after activists forced the temporary closure of government headquarters after clashing with police.

Protesters, who have occupied key streets for more than two months, have called on city leader Leung Chun-ying to step down after Beijing in August ruled out a free choice of candidates for Hong Kong's next leader.