Mohamed Tahar Barhoumi, student, Lotfi Hammami, student, Bourhan Gasmi, Tahar Gargoura, Abdel Moumen Belanes: Mohamed Tahar Barhoumi, Lotfi Hammami and Bourhan Gasmi are being held incommunicado in secret detention and there are fears that they may be facing torture or ill-treatment. AI is also concerned that they may be prisoners of conscience and that the two other men, whose homes have been visited by the security forces, may be in danger of arrest.