Supporters of Nicaragua's ruling party on Tuesday blocked the opposition from delivering a letter to ousted Honduran President Manuel Zelaya.
About 100 supporters of the ruling party, Sandinista National Liberation Front (FSLN), blocked the highway to Ocotal near Zelaya's camp, the Nicaraguan border with Honduras, stopping deputies from the opposition Nicaraguan Democratic Bloc (BDN) to reach the deposed president.
The opposition had planned to hand a letter to Zelaya, requesting him to stop using Nicaragua as a "rebellious base," local media said.
Zelaya and his followers are currently camping in Ocotal to organize "pacific resistance" against the post-coup Honduran government. Their stay was permitted by the Nicaraguan government.
The opposition did not say whether they supported Zelaya or the post-coup government.
Zelaya was forced into exile after a coup on June 28. He had angered the army, the legislative and judiciary by insisting on a constitutional amendment that would allow him to seek re-election. Since then, his demand for reinstatement has been rejected by the post-coup government.
The Nicaraguan government condemned the coup and demanded Zelaya's reinstatement.
Nicaraguan opposition leader Eduardo Montealegre traveled to Honduras on Tuesday to try to meet with post-coup leader Roberto Micheletti.