The Brazilian embassy in the capital of Honduras, Tegucigalpa, is surrounded by troops and ousted Honduran leader Manuel Zelaya is inside.
Mr Zelaya has been holed up in the embassy since Monday with family members and about 40 supporters.
He had been in exile since July, when he was forced from the country at gunpoint, but made a surprise return to Honduras.
Andy Gallacher reports from outside the embassy.
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