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.
Ukraine accuses SpaceX of crippling drone missions as ties with US worsen
Ukraine accused Elon Musk's SpaceX on Wednesday of limiting Starlink services, crippling its drones, as Russian missiles knocked out power stations in attacks President Volodymyr Zelenskyy called "ostentatious disrespect" to Donald Trump.
Kenya reports second Ebola case, family member of first patient
Kenya reported a second case of Ebola on Wednesday, about a week after recording its first ever infection of the viral disease when a Kenyan who had been living in Congo died in a Nairobi hospital on October 5.
Debris from intercepted Houthi missiles injure 4, damage 15 homes in Riyadh
Falling debris from two intercepted cruise missiles launched by Houthis has injured four people and damaged 15 homes, Saudi authorities said early on Wednesday.
India's 'cockroach' movement leaders detained in jail for 5 days
An Indian court has ordered the detention of two leaders of the youth-led Cockroach Janta Party (CJP) in jail for five days, the party said on Wednesday.
Saudi Aramco administrative building targeted, minor blaze reported
Saudi Arabia's Ministry of Energy said an Aramco administrative building in Dhahran was targeted on Tuesday evening, causing a "limited" fire, with no injuries reported.
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