Jeremy Corbyn says the United Kingdom should not extradite Julian Assange to the USA.
The Labour leader says he shouldn't be handed over to the US "for exposing evidence of atrocities in Iraq in Afghanistan".
The Wikileaks co-founder was arrested at the Ecuadorian embassy in London on Thursday.
He's been there since 2012 as an asylum seeker.
Assange initially took refuge in the embassy to avoid extradition to Sweden over a sexual assault case.
However on Thursday Ecuador abruptly withdrew its asylum.
They then invited the police to arrest Assange.

Trump announces commitments for Gaza reconstruction at Board of Peace
Police arrest King Charles' brother Andrew over misconduct relating to Epstein
South Korean court hands life term to ex‑President Yoon in insurrection trial
Over 20 countries to attend Trump's Board of Peace meeting on Thursday
Eight skiers found dead after California avalanche