The WikiLeaks founder was handed a 50-week sentence earlier this week and is being held at Belmarsh Prison in southeast London. He is fighting an extradition request made by the US over an alleged hacking conspiracy.
The UN Working Group on Arbitrary Detention said it was deeply concerned about the “disproportionate” sentence and claimed that violating bail was only “a minor violation”.
“The working group is further concerned that Mr Assange has been detained since 11 April 2019 in Belmarsh Prison, a high-security prison, as if he were convicted for a serious criminal offence,” it said.
“This treatment appears to contravene the principles of necessity and proportionality envisaged by the human rights standards.”