CAIRO  - Hosni Mubarak is still president of Egypt as he never signed a resignation letter, his lawyer asserted in court Sunday as he began wrapping up the defence case in the trial of the ousted strongman. “Mubarak did not write a letter of resignation,” Farid al-Deeb told the court. “The document was signed by Omar Suleiman,” Egypt’s former spy chief who was appointed by Mubarak as vice president during a popular uprising last year demanding that the veteran leader quit. As a result, Deeb said, the Cairo criminal court is not competent to try Mubarak, who should be referred to a “special tribunal.”