A second whistleblower has come forward in the impeachment inquiry against US President Donald Trump.
Mark Zaid, a lawyer for the original whistleblower in the case, said he would be representing a second whistleblower who had direct knowledge of the White House dealings with Ukraine.
He said the person is also an intelligence official.
The impeachment inquiry has centered on Trump's attempts to get Ukrainian president Volodymyr Zelensky to open an investigation into former vice president Joe Biden and his son, Hunter.
Trump and his Republican supporters have dismissed the complaint as politically motivated hearsay.

Putin hosts Trump envoy for new Ukraine peace talks, frees US citizen held in Russia
European government websites go dark as software flaw sparks security scramble
Rubio says Witkoff-Zelenskyy meeting 'positive', ideas to be discussed with Russia
Nigeria confirms Ebola case in patient who arrived from Uganda
Suspect in vehicle attack on Australian lawmaker appears in court as police probe motive
France calm under night curfews as government awaits new weekend protests
Zelenskyy to meet Witkoff as Trump praises Russia and rebukes Ukraine
Indian voters declared dead fight to get back on electoral rolls
