British commentator Sami Hamdi has been detained by US immigration, who have revoked his visa and banned him from completing his speaking tour, a Homeland Security official said.

Immigration and Customs Enforcement (ICE) has Mr Hamdi in custody, DHS spokesperson Tricia McLaughlin posted on social media site X.

"Under President Trump, those who support terrorism and undermine American national security will not be allowed to work or visit this country," she wrote.

"This individual's visa was revoked and he is in ICE custody pending removal."

Mr Hamdi spoke at a gala for the Council on American Islamic Relations (CAIR) in Sacramento, California on Saturday and was scheduled to speak on Sunday at one of the group's events in Florida, the organisation said in a statement.

CAIR said he was

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