Police arrest Julian Assange at the Ecuadorian embassy in London

London (CNN)(AIWA! NO!)Police entered the Ecuadorian embassy in London Thursday morning, arresting Julian Assange and bringing the WikiLeaks founder’s seven-year stint there to a dramatic close.

Metropolitan Police said in a statement that he was “further arrested” on his arrival at a London police station on behalf of United States authorities, who have issued an extradition warrant.

The UK Home Office confirmed the extradition request in a statement, adding, “He is accused in the United States of America of computer-related offences.”

Assange arrived at Westminster Magistrates Court Thursday afternoon. Officers made the initial move to arrest Arrange after Ecuador withdrew his asylum and invited authorities into the embassy, citing the Australian’s bad character.

Assange was initially detained for “failing to surrender to the court” over a warrant issued in 2012 and was in custody at a central London police station, police said.

Mr Assange appears before Westminster Magistrates’ Court in London as soon, police added.