Turkey has detained more than 100 people after leftist groups staged anti-NATO protests in Ankara ahead of a NATO summit, according to multiple reports.

The detentions followed police operations in several Turkish provinces as Turkey tightened security ahead of the summit. Authorities had imposed a strict ban on public gatherings in Ankara during the run-up to the meeting, but demonstrators still held a rally against NATO.

Media and rights groups said the raids targeted left-wing and socialist political circles, journalists, and other civil society figures. Reports also said police detained people including members connected to banned leftist organizations, as well as individuals accused of ties to militant groups, with authorities citing ongoing investigations.

No single reason was provided for all detentions, but critics said the crackdown appeared aimed at preventing protests and silencing dissent in the lead-up to the high-profile event. Rights organizations also argued the use of broad security measures and arrests violated freedom of assembly and expression, and they urged authorities to release those detained.