Lawyers for Julian Assange have indicated he may renege on a pledge to face extradition to the US, days after he promised to do so if the whistleblower Chelsea Manning was released from prison.

The Wikileaks founder said last week that he would leave his self-imposed exile in the Ecuadorian Embassy in London if President Obama freed former US Army intelligence analyst Manning, who was jailed for 35 years for leaking documents relating to the Iraq war.

Mr Obama announced on Tuesday that he had commuted Manning’s sentence, meaning she will be released in May, but said the decision had nothing to do with Mr Assange’s offer.

On Wednesday morning Mr Assange indicated that he would honour his promise. Wikileaks said via its official Twitter account: “Assange is still happy to come to the US provided all his rights are guaranteed despite White House now saying Manning was not quid-pro-quo.”