Turkish human rights lawyer Tugay Bek, under detention for the past 4 days, were battered by riot police officers when he resisted to be handcuffed behind back.

According to Turkish media, Bek was taken to a hospital for medical control in Adana on Wednesday night. When a group of police officers wanted to handcuff him behind back after the control, he resisted, leading to a tumult that left bruises on Bek’s face.

“Shocking to hear detained lawyer Tugay Bek in Adana was beaten by police. Tugay well known for defending rights of victims of police abuse,” the Human Rights Watch’s (HRW) Turkey director Emma Sinclair-Webb tweeted on Thursday.

Bek was detained along with 568 others who were rounded up as part of an investigation into the pro-Kurdish Peoples’ Democratic Party (HDP) officials in the following days of the Istanbul blasts that killed 44 people, mostly police officers, for which an offshoot of the outlawed Kurdistan Workers’ Party’s (PKK) claimed responsibility.