US Democratic Presidential Candidate, Hillary Clinton has urged Federal Bureau of Investigation, FBI, to explain without delay why it is carrying out a new investigation into her use of emails. She said, Americans deserve to get the full and complete facts immediately.<br/><br/>FBI said, it has new emails linked to her use of a private server when she was Secretary of State. The latest emails were discovered as part of a separate investigation into the estranged husband of top Clinton aide, Huma Abedin. Reports say, the 69-year-old Democratic candidate, vying to become America's first female president, is still the front-runner to win the November 8 election over her Republican rival Donald Trump.<br/><br/>Voting has already begun in 34 of 50 states to choose a successor to President Barack Obama.<br/>FBI Director James Comey's letter to US lawmakers announcing that inquiries had been renewed, shocked the campaign and rocked world markets. Meanwhile, Republican presidential rival Donald Trump said, the move, announced 11 days before the election, was the biggest political scandal since Watergate.