Honduras' interim President Roberto Micheletti said on Sunday Nicaraguan troops were moving to the mutual frontier and urged Nicaraguan President Daniel Ortega to respect Honduran sovereignty, Reuters reported.
He gave no further details about troop movements in Nicaragua which shares a border with Honduras to the southeast of the Honduran capital Tegucigalpa.
His comments came as ousted President Manuel Zelaya attempted to fly home a week after he was ousted in a coup. Zelaya is a left-wing ally of Ortega and Venezuela's President Hugo Chavez.
The interim government said it had contacted the Organization of American States to express its willingness to enter dialogue. The OAS earlier on Sunday suspended Honduras for refusing to reinstate Zelaya.