WASHINGTON (Reuters) - U.S. Senator Mark Warner, top Democrat on the Intelligence Committee, said on Thursday he was deeply disappointed by the lack of information Twitter TWTR.N provided at a briefing for congressional investigators probing Russian interference in the U.S. election.
He said the Twitter briefing was mostly derivative of a presentation earlier this month given by Facebook FB.O and lacked thoroughness. "Their response was, frankly, inadequate on almost every level," Warner told reporters.
Reporting by Dustin Volz; Writing by Eric Beech; Editing by Eric Walsh
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