Hillary Clinton has hit out at rival Donald Trump on Twitter with a scathing response that has gone viral.
A social media spat broke out when Mr Trump slammed President Obama's decision to come out in support of his former secretary of state.
The billionaire real estate mogul wrote: “Obama just endorsed Crooked Hillary. He wants four more years of Obama—but nobody else does!”
But Mrs Clinton replied with a terse three-word response that has been shared almost 400,000 times, becoming her most retweeted post ever.
She simply wrote: “Delete your account.”
The unimpressed Republican hit back: “How long did it take your staff of 823 people to think that up--and where are your 33,000 emails that you deleted?”
This week, Mrs Clinton declared victory in her battle to be the Democrats' presidential nominee, describing Mr Trump as "temperamentally unfit" to be president
And yesterday Mr Obama formally endorsed his former secretary of state as the candidate.
He said in a video: “I know how hard this job can be. That’s why I know Hillary will be so good at it.
“In fact, I don’t think there’s ever been someone so qualified to hold this office.
"She’s got the courage, the compassion and the heart to get this job done.”
