US Secretary of State Mike Pompeo has been subpoenaed.
A Democratic-led US House of Representatives committee issued the order on Friday.
They want to him to hand over documents regarding contact the US government had with the Ukrainian government.
Earlier this week House Speaker Nancy Pelosi launched a congressional impeachment inquiry of US President Donald Trump.
US strikes Iran in response to attack on cargo ship in Strait of Hormuz
The US military has attacked Iran in response to an Iranian drone strike on a cargo ship in the Strait of Hormuz, with each country accusing the other of violating terms of a ceasefire agreed on last week.
Venezuela quake toll tops 900, search intensifies for hundreds trapped
Desperate Venezuelans and rescue teams raced to find survivors as the death toll from twin earthquakes rose above 900 with foreign crews and aid only beginning to reach devastated areas just days after the quakes.
Germany hit by record temperatures as heatwave moves east
Germans braced for sweltering conditions on Saturday as a heatwave linked to dozens of deaths in Western Europe was expected to move east after temperatures broke records above 40 degrees Celsius.
Israel, Lebanon sign framework peace deal after US-mediated talks
Israel and Lebanon signed a framework agreement in Washington on Friday following several days of talks to secure an end to fighting between Israel and Iran-backed Hezbollah.
Rescuers comb Venezuelan quake rubble, thousands reported missing
Rescuers worked through the night on Friday to save hundreds of Venezuelans trapped in rubble and find thousands more missing after two of the biggest earthquakes in Latin America's modern history smashed areas in and around the capital Caracas.
7:00pm - 11:00pm
Officially the UAE's favourite DJ, Dany Neville makes sure you have the soundtrack you need every Saturday night.
Stupid Song <New>
Olivia Rodrigo
Young Blood
5 Seconds Of Summer
American Girls
Harry Styles