Honduras's supreme court has rejected an ultimatum by the Organisation of American States (OAS) to reinstate the country's leader after he was deposed in a military-backed coup.

The leader of the court rejected a call by Jose Miguel Insulza, secretary-general of the OAS, on Friday to restore Manuel Zelaya to power, Danilo Izaguirre, a court spokesman, said.

"Insulza asked Honduras to reinstate Zelaya, but the leader of the court categorically answered that there is an arrest warrant for him," he said in Tegucigalpa, the Honduran capital.

"Now the OAS has to decide what it will do."

Insulza is expected to also meet religious leaders, union representatives and pro-Zelaya politicians as part of his visit.

The 35-member OAS has set a Saturday deadline for the military-backed interim government to comply with its demands.

It has threatened to expel Honduras from the regional grouping if it fails to meet its deadline.

Lucia Newman, Al Jazeera's Latin America editor, said that several scenarios to solve the crisis had been proposed by OAS member states.