Anti-government protesters in Turkey said they planned to keep up a campaign of demonstrations triggered by the jailing of Istanbul's mayor - the biggest such opposition action in a decade - despite mass arrests and clashes with police.

Turkey formally arrested President Recep Tayyip Erdogan’s main political rival, a decision likely to trigger more market turmoil and protests across the country.

Opponents say President Recep Tayyip Erdogan manipulates the courts and the media to tighten his grip on power, and now is trying to prevent a top contender from running for president.