Foreign ministers from the American continent have urged Britain and Ecuador to peacefully end the stand-off over WikiLeaks founder Julian Assange.
Assange, who is wanted in Sweden for questioning on sex allegations, has been granted political asylum by the South American country and spent the last two months holed-up in its London embassy.
The Organisation of American States (OAS) - made up of 35 states including the US and Ecuador - met in Washington to discuss the situation and passed a motion backing the "inviolability of diplomatic missions".
Senior officials from the 35-member bloc also urged the two sides to continue a dialogue to resolve the row.
It comes after photographs emerged of a police document that apparently reveals instructions for officers outside the embassy to arrest Assange under "all circumstances".
The pictures show officers stood outside the building with one of them clutching a clipboard of paperwork.
The document captured by photographers states that should Mr Assange emerge from the embassy either with a diplomat, in a diplomatic car, or even if he is smuggled out in a diplomatic bag, he should be arrested.
Scotland Yard said the document was the officer's own handwritten notes from a briefing.
"Our objective is to arrest Julian Assange for breach of bail and under no circumstances will an arrest be made in breach of diplomatic immunity," a spokesman added.
Britain and Ecuador have been locked in a diplomatic stand-off over Mr Assange since he was granted political asylum by the South American country.
Foreign Secretary William Hague has insisted that the Government will not allow Mr Assange safe passage out of the UK.
The WikiLeaks founder is refusing to travel to Scandinavia amid fears he will be extradited to the United States over his controversial website, which has published hundreds of thousands of classified documents.
The UK government has made it clear Mr Assange, who denies the allegations, will be arrested if he steps outside of the embassy after jumping bail.
Sky's Home Affairs correspondent Mark White said any attempts to seize Mr Assange were he to leave the embassy "might cause a bit of a diplomatic incident between the Ecuadorians and the UK Government, but the British Government have been quite consistent on this".
"They say that they believe they have got the law on their side," he said.
"That they have gone through every court in the land - from the Magistrates courts, through the High Court, the Court of Appeal, right up to the Supreme Court - all have ruled that the European extradition warrant for Julian Assange is lawful, and that he should be extradited to Sweden.
"So the British Government believes that even if they have to stop a diplomatic car and take Julian Assange out of that car and arrest him, that they would have the law on their side.
"The Ecuadorians feel a little differently about that."
Ecuador's President Rafael Correa has said the diplomatic row "could be ended tomorrow" if Britain gave the activist safe passage to South America.
In the meantime, the Government has written to the Ecuadorian embassy to resume talks over Mr Assange's future.
The Foreign Office confirmed a "formal communication" had been sent to diplomats, but would not reveal the contents.