United Nations Security Council Resolution 320, adopted on 29 September 1972, after reaffirming previous resolutions, the Council expressed concern that despite the previous resolutions, several states were covertly and overtly violating the sanctions on Southern Rhodesia. The Council requested that the committee which had been established in resolution 253, consider the type of action which should be taken "in view of the open and persistent refusal of South Africa and Portugal to implement sanctions" and asked for the report no later than 31 January 1973.