President Donald Trump's call with his Ukrainian counterpart contained an intriguing, if incomplete, reference to the cybersecurity company Crowdstrike Inc.

It came after Trump asked Ukrainian President Volodymyr Zelenskiy to "do us a favor."

"I would like you to find out what happened with this whole situation with Ukraine, they say Crowdstrike ... I guess you have one of your wealthy people... The server, they say Ukraine has it," Trump said, according to a memo describing the July 25 call released by the White House. There are ellipses in parts of the transcript, which a U.S. official said doesn't indicate missing words or phrases. Instead, it represents a voice trailing off or a pause.