United Nations Security Council resolution 654, adopted unanimously on 4 May 1990, after recalling resolutions 637 (1989), 644 (1989), 650 (1990) and 653 (1990), the council endorsed a report by the Secretary-General and decided to extend the mandate of the United Nations Observer Group in Central America for a further six months until 7 November 1990.
The decision to extend the mandate was taken on the council's understanding that the demobilisation process of the Contras and other resistance in Nicaragua would be complete by 10 June 1990. The resolution also noted the need to remain vigilant of the financial costs of the Observer Group, given the increased demand on United Nations peacekeeping forces.