In pictures: Zimbabwe riots

Riot police arrest 20 people and break up protests using teargas and batons as residents of two townships east of Harare - Mabvuku and Tafara - put up barricades in protest at the country's economic decline.

As fast as police cleared barricades others were put up

Police put roadblocks around Harare city centre to prevent anti-government protests there

Police deployed in force and later conducted house-to-house searches

Police drive away after firing tear gas

Police force protestors to move a burnt-out bus off the road

Protesters used refuse and burnt out cars to block roads