Egypt\'s ousted president Hosni Mubarak has returned to prison after he was transferred to Maadi Military Hospital for an X-ray of his head. The former president arrived at the hospital, amid a heavy security presence of police and military leaders. The X-ray was carried out after he fell in the prison bathroom, on Saturday, injuring his head and chest. Security sources said that the 84-year old was transferred from the hospital, back to Tora prison, in a private ambulance with heavy security arrangements.