The resolution established a new Committee of the Security Council to monitor the implementation of the sanctions, update a list of sanctioned individuals and entities and make recommendations. Meanwhile, the Secretary-General Kofi Annan was requested to establish a panel of five experts to conduct a follow-up mission to Liberia and neighbouring states concerning the implementation and violations of the restrictions against Liberia, including rebel movements; it had to report by 30 May 2004. It welcomed UNMIL's readiness to co-operate with the Committee and requested the United Nations Mission in Sierra Leone and United Nations Mission in Côte d'Ivoire to assist the Committee and expert panel.