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.

Textile factory fire in southern Chinese city of Foshan kills 8
At least 3 killed in Pakistani airstrike on Afghanistan
Typhoon approaches eastern Japan, prompts flood and landslide warnings
Australia to seek UN Security Council seat from 2029
