US president-elect Donald Trump will not pursue investigations of Hillary Clinton over her email scandal, according to one of his senior advisers.

It marks a break with what had been a major promise during his election campaign.

Kellyanne Conway, who managed Mr Trump's campaign, said the billionaire wanted to hep his former rival "heal".

She said: "He doesn't wish to pursue these charges. If Donald Trump can help her heal, then perhaps that's a good thing."

Mrs Conway added that Mr Trump hoped the decision would set a conciliatory tone for Republicans in Congress, encouraging them to also refrain from calling for more investigations of Mrs Clinton.

She said: "I think when the president-elect, who's also the head of your party, tells you before he's even inaugurated that he doesn't wish to pursue these charges, it sends a very strong message."