LONDON — Swedish prosecutors will press Britain’s Supreme Court to send WikiLeaks founder Julian Assange to Sweden to face questioning on sex charges.

They argue that the arrest warrant for Assange is legally valid and must be acted on by UK authorities.

Assange is wanted in Sweden for questioning and officials there have been seeking his extradition since late 2010.

Assange denies wrongdoing and has fought the extraditon demand across the British court system, saying he fears he won’t receive a fair trial if he’s sent to Sweden.

Thursday is the last day of the British Supreme Court hearing which will decide his fate. Much of the time is expected to be taken up by Clare Montgomery, the Swedish prosecution’s lawyer.

Judgment is expected within a few weeks.