Lawyers for an Algerian man known as “the black flag”, whose surrender is being sought by the US on international terrorism charges, have said he should not be extradited because a search of his dwelling was unconstitutional.

A man arrested three years ago during an investigation into an alleged conspiracy to murder a Swedish cartoonist has appeared in the High Court on foot of an extradition request from the US to face terrorism charges.

The former wife of an Irish Muslim charged with threatening to kill a US lawyer said she was “afraid of him” when they separated.

An Irish Muslim threatened to put a bullet in the head of an American lawyer who organised a rally against Islamic terrorism in the US, a court has heard.