A tense Republican National Convention erupted in turmoil Monday amid a loud revolt by delegates opposed to presumptive presidential nominee Donald Trump, furious over being denied a floor vote on the event's rules.

Several hundred anti-Trump delegates seeking to change the convention rules so that they could opt out of voting for the real estate mogul roared their disapproval after being denied the chance to debate the changes or have a full vote on them.

"Shame! Shame!" some shouted, as pro-Trump delegates yelled back. Some of those opposed to Trump even walked out.

The interruption highlighted the divisions within the Republican Party as it struggles to unify behind Trump in the run-up to the November election against Democrat Hillary Clinton.