A suspected Basque terrorist was arrested today in London.
Spanish national Kemen Uranga Artola, 43, was arrested by officers from the Metropolitan Police's extradition unit.
They executed a European arrest warrant alleging his involvement in terrorism-related offences in Spain.
Artola, who featured on a 2002 American government's list of terrorists, was arrested in the NW5 area and will appear this afternoon at Westminster Magistrates' Court for an extradition hearing.
His arrest is unrelated to the Olympics, Scotland Yard stressed.
A man wanted in connection with the murder of his mother has vanished from Spanish custody.
Margaret Sheehy was found dead in her flat in Kingston, last month.
Her son, Sean Heiss, was arrested by police in Spain two weeks ago.
It was thought he was being held while awaiting extradition but today it emerged he was initially arrested for "threatening conduct" and has been released.
Stevenage born Lewis Hamilton snatched his third pole position of the season for tomorrow's Spanish Grand Prix in Barcelona.
But it wasn't all plain sailing for the McClaren star, as he was forced to stop his car on the track on the way back to the pits.Hamilton took top spot at the Circuit de Catalunya, from surprise front rower Pastor Maldonado, by just 0.6secs.
Hamilton's session ended with him stopping on track, but that did not detract from his obvious delight in clinching his 22nd pole in F1.
Hamilton's McClaren teammate, Jenson Button will start from11th on the grid with Red Bull's Mark Webber directly behind him.