Macedonian opposition leader Zoran Zaev vowed Sunday to continue street protests until the conservative Prime Minister Nikola Gruevski steps down.

"We will stay here in front of the government. Nikola Gruevski must resign. Until he goes we are not going to leave either," the leader of main opposition SDSM party told the crowd of more than 20,000 at an anti-government protest in the capital Skopje.