The president of the country's rightist-controlled legislature has rejected postponement of this month's presidential elections - leftist rebels' main condition for participation.

Ricardo Alvarenga made the statement Monday, a day after a rebel commander interviewed in this town said the guerrillas are on the verge of a new offensive in the country's nine-year civil war.Prospects for peace had dramatically brightened, then dimmed after Jan. 24, when the guerrillas offered to participate in the presidential vote and respect its outcome if given six extra months to prepare and guaranteed security.