The imprisoned Wikileaks founder Julian Assange wants to take further legal action against his extradition to the USA and has filed an appeal.
The High Court in London confirmed receipt of such an application to the BBC, as the broadcaster reported on Friday.
Two weeks ago, after years of legal wrangling, the British government approved the extradition of the Wikileaks founder to the United States.
The 50-year-old has been in prison in London since 2019.
Although he has not been convicted, the risk of absconding is considered high.
The US judiciary wants to put Assange on trial for allegations of espionage.
The Australian faces up to 175 years in prison if convicted.
He is accused of having stolen and published secret material from US military operations in Iraq and Afghanistan together with whistleblower Chelsea Manning, thereby endangering the lives of US informants.
His lawyers argue that no one was harmed.
Supporters see Assange as a courageous journalist who brought war crimes to light and who should now be made an example of.
Assange also has many supporters in Germany.
In a joint statement, Sevim Dagdelen, a left-wing member of the Bundestag, as well as members of the FDP, the Greens and the SPD, called on the federal government to work harder to get Assange released.
In the interests of press freedom and also for humanitarian reasons, Assange must be released immediately.