Turkish authorities detained more than 100 people taking part in an anti-NATO protest march organised by the Communist Party ​of Turkey (TKP) on Sunday, ahead of an alliance summit in Ankara next week, the party said in a statement, Reuters reported. 

Turkey will host leaders from the 32 allied countries, as well as officials from NATO's partners, in Ankara for a summit on Tuesday and Wednesday. Authorities have ramped up security measures across the ​Turkish capital ahead of the meeting, banning demonstrations, barricading large parts of the city, ​and closing off roads.