Clashes erupt in Haiti election

At least one person has been killed and several injured in clashes in Haiti, as tensions mount over the results of last Tuesday's election.
Supporters of presidential front-runner Rene Preval manned burning roadblocks in the capital and occupied a hotel, demanding he be declared the winner.
Witnesses said UN peacekeepers had opened fire on protesters, but the UN said its troops had fired in the air.
