U.N. Secretary-General Javier Perez de Cuellar worked with the Iranian and Iraqi foreign ministers again Saturday in his latest attempt to revive stalled Persian Gulf peace negotiations.

The latest round of talks, which began Thursday, was to last until Monday when Perez de Cuellar goes to Lucerne in eastern Switzerland to make a speech before traveling Tuesday to Poland for an official visit.Iranian officials said Saturday that lower-level experts probably would remain in Geneva a few days longer to prepare another possibly ministerial encounter in New York in about two weeks.

Iran and Iraq, whose nearly eight-year war cost the lives of an estimated 1 million people until a cease-fire took effect last Aug. 20, have been deadlocked since U.N.-mediated talks began five days later, on Aug. 25.