At least 361 LGBT activists were detained on Sunday for attempting to hold a pride march in İstanbul’s famed Taksim square to mark one of the largest organized gay festivals in Turkey.

Turkish media outlets and several pro-LGBT twitter accounts reported that police fired plastic bullets at a group of around 40 activists and heavy police presence stopped people from entering Istiklal Street, where the rally was scheduled to start.

The İstanbul Governor’s Office banned an LGBTI pride parade scheduled to take place in İstanbul’s famed Taksim street citing security and public order concerns, the Turkish media reported.

The 2014 LGBTI pride parade was the last one that was allowed by the Turkish authorities. All the following parades have been banned by the İstanbul governor over “security concerns.”