More than 1,100 detained in Turkey amid huge demonstrations over mayor’s arrest – as it happened

Tens of thousands gathered in Istanbul with unrest likely to continue over treatment of presidential challenger to Erdoan

• Journalists among more than 1,100 arrested in Turkey crackdown
• People in Turkey: share your views and experiences of recent protests

The Danish national police force said it has sent extra personnel and sniffer dogs to Greenland as the island steps up security measures ahead of a planned visit this week by second lady Usha Vance, AP reports.

Spokesperson Rene Gyldensten said the extra officers were part of regular steps taken during visits by dignitaries to Greenland, a self-governing, mineral-rich territory of American ally Denmark.