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The White House apologized to the British government over 'ridiculous' spying claimsby Circa News

A spokesman for Britain's prime minister says the White House has promised that it won't repeat a claim that U.K. spies snooped on US President Donald Trump.

Prime Minister Theresa May's spokesman, James Slack, says the British government has made it clear to the U.S. that the "ridiculous" claims should be ignored. He said Friday that Washington has assured Britain they will not be repeated.

National security adviser H.R. McMaster spoke with his British counterpart on Thursday about press secretary Sean Spicer's comment from the White House podium about a Fox News report that said British intelligence helped wiretap Trump Tower during the 2016 campaign, a White House official told CNN Friday.

The official described the conversation as "cordial" and that McMaster told his counterpart that "their concerns were understood and heard and it would be relayed to the White House."

White House spokesman Sean Spicer on Thursday cited Fox News analyst Andrew Napolitano, who suggested that the British electronic surveillance agency GCHQ had helped then-President Barack Obama spy on Trump before last year's presidential election.

GCHQ took the unusual step of releasing a statement calling the claims "nonsense." It said "they are utterly ridiculous and should be ignored."

--The Associated Press contributed to this report.