Zimbabwe President Emmerson Mnangagwa, a former ally of Robert Mugabe, narrowly won the country's landmark election, results showed early Friday, in an outcome set to fuel fraud allegations as security forces patrolled the streets to prevent protests.

Mnangagwa won 50.8 percent of the vote, ahead of Nelson Chamisa of the opposition MDC party on 44.3 percent, the Zimbabwe Electoral Commission (ZEC) said.