Riot police fire tear gas at demonstrators after Haitian candidate 's speech . The crowd of protesters was chanting for the resignation of President Rene Preval, who is facing a corruption investigation and has been accused by some Haitians of being too close to former dictator Jean-Claude Duvali@@ An international monitoring official says vote-counting should continue .
Riot police fire tear gas at demonstrators after Haitian candidate 's speech . 12 of the 18 presidential candidates are alleging widespread fraud at the polls . An international monitoring official says vote-counting should continue .