CAIRO - One of Egypt's last candidates in an upcoming presidential election announced he was halting his campaign and withdrawing from the race on Wednesday, saying conditions did not allow for a fair contest. Rights lawyer Khaled Ali said at a news conference in Cairo: 'We today announce our decision not to enter this race, and will not present our candidacy papers.' The announcement came a day after Egyptian authorities detained the last serious potential challenger to President Abdel Fattah al-Sisi.