Three people were killed in Zimbabwe's capital Harare after troops opened fire on rioting opposition supporters, police say, reports BBC.

The government says the army was deployed in central Harare to help police restore order.

The opposition MDC Alliance condemned the crackdown, saying it was a reminder of the "dark days" of Robert Mugabe's rule.

It alleges that the governing Zanu-PF party has rigged Monday's elections.

Parliamentary results show the Zanu-PF heading for a big majority.