People walk in front of the Tunis Palace of Justice in Tunis. More than 40 people have been summoned to face trial over Tunisia's deadliest attack in a Mediterranean resort in 2015. AP
People walk in front of the Tunis Palace of Justice in Tunis. More than 40 people have been summoned to face trial over Tunisia's deadliest attack in a Mediterranean resort in 2015. AP

Tunisia: returning foreign fighters could contribute to radicalising others, activists say