A top diplomat leaving the Brazilian embassy denounced the state of "siege," with troops lined up around the compound.
"It's the only place in the world where there's an embassy under siege," said Francisco Catunda, the Brazilian charge d'affaires, as he left the building for the first time since Zelaya appeared there.
Most people inside the embassy were in good health, Catunba said, adding that one Brazilian diplomat told him he had smelled gas the previous day, after Zelaya accused the army of trying to intoxicate him and some 60 people still inside the compound.
Pressure and isolation
The UN Security Council on Friday warned the rebel authorities not to harass the embassy and Brazilian President Luiz Inacio Lula da Silva said that Zelaya "could stay as long as necessary for his safety" in the embassy.
The de facto leaders, led by Roberto Micheletti, insisted the compound will not be taken by force and denied they were responsible for initial power and water cuts.
The interim government said it was not ready to meet with a delegation of diplomats from the Organization of American States (OAS) hoping to help mediate the crisis.
The UN froze its technical support for presidential polls scheduled for November, which appeared increasingly challenging to organise.
A daytime curfew was lifted and airports reopened allowing businesses to resume and providing relief to an increasingly frustrated public. However, a nighttime curfew remained in place.
Zelaya, a rancher who veered to the left after his election and alliance with Venezuelan President Hugo Chavez, was ousted from power in a military-backed coup in June.