On June 18, 2010, Haidallah wrote an open letter to the heads of state who have good relations with the king of Morocco, requesting for help to bring his son back to Mauritania or to liberate him. He denounces the conditions of imprisonment of his son, who is handicapped. On June 24, 2010, El Ghassem Uld Bellali, a Mauritanian deputy, declared that the imprisonment of Sidi Mohamed Uld Haidalla is a Moroccan "political vengeance" against Haidalla's father, for the recognition he gave to the SADR and to the right of self-determination of the Sahrawi people, when he was president of Mauritania.