Turkish prosecutors have demanded up to 15 years jail on charges of backing a terror group for 11 activists, most of whom were detained in a raid on a workshop led by Amnesty International, a report said Sunday.

The accused, who include the director of Amnesty Turkey Idil Eser, several prominent Turkish rights activists and a German citizen and Swedish citizen, have been charged with "giving help to an armed terror group", the Dogan news agency said.