Prisoners in Turkey’s Diyarbakır prison have been banned from receiving a number of classic novels, including Ali Baba and the Forty Thieves, on the grounds that the literature might be used as a tool for “encoded communication,” the RT reported.

Citing the local media outlets, Sputnik reported that the decision to ban the books was made in accordance with a recent decree by the Turkish Justice Ministry. The ministry earlier announced that terrorism convicts and arrestees in Turkish prisons are allowed to receive only textbooks” that are required for a mandatory education.

Among the books banned by the Diyarbakır prison management are The Little Prince, Robinson Crusoe, Peter Pan, Tom Sawyer, and Ali Baba and the Forty Thieves, as well as several others.