Embattled WikiLeaks founder Julian Assange is set to face the world's media from the safe haven of London's Ecuadoran embassy but risks arrest if he takes even one step out of the building.
With police officers primed to detain him, Assange must on Sunday find a way of speaking publicly without setting foot outside, raising the possibility of him being forced to speak from a balcony or lean out of a window.
WikiLeaks was tight-lipped about the logistics of Assange's planned appearance at 1300 GMT, with spokesman Kristinn Hrafnsson telling the AFP news agency what little he knew could not be discussed for "security reasons".
But Britain's foreign office warned that the steps to the embassy were considered British territory, and police said officers would take "appropriate action" if he strayed from the building.
Assange, 41, took refuge in the embassy on June 19 to evade extradition to Sweden where he is wanted for questioning over alleged sexual misconduct.
Supporters of the Australian former hacker, granted asylum by Ecuador on Thursday, believe that once in Sweden he could be extradited to the United States.