US presidential debate: Trump says he wants to investigate Clinton

Donald Trump says that if elected he would get his attorney general to investigate Hillary Clinton over her email practices.

Mrs Clinton has faced a steady drip of revelations about her use of a private email server while secretary of state since it was first revealed in 2015.

An FBI investigation concluded that no "reasonable prosecutor" would bring a criminal case against Mrs Clinton, but that she and her aides were "extremely careless" in their handling of classified information.