Leftist guerrillas say the favorable U.S. response to their proposal to take part in elections has moved them to suspend attacks on U.S. institutions and personnel.

Wednesday's announcement reverses a rebel stand that held U.S. personnel or property as legitimate targets because Washington has given President Jose Napoleon Duarte's government about a million dollars a day economic and military aid.The insurgents last week offered to take part in presidential elections if the vote were postponed from March 19 to September and their security concerns were met. It was a major turnabout for the rebels, who had condemned all previous elections this decade as shams.