-DATE- 19880510 -YEAR- 1988 -DOCUMENT_TYPE- MESSAGE -AUTHOR- F.CASTRO -HEADLINE- MESSAGE TO COLONEL DENIS SASSOU-NGUESSO, ON BILA -PLACE- CUBA -SOURCE- HAVANA RADIO REBELDE -REPORT_NBR- FBIS -REPORT_DATE- 19880511 -TEXT- Castro Sends Message to Congolese President FL10056184288 Havana Radio Rebelde Network in Spanish 1700 GMT 10 May 88 [Text] Commander in Chief Fidel Castro sent a message with Rodolfo Puentes Ferro, member of the PCC Central Committee, to Colonel Denis Sassou-Nguesso, president of the People's Republic of the Congo. The exact text of the message has not been revealed, but according to Cuban sources in Brazzaville it reportedly refers to bilateral relations. It is also said to contain the conclusions reached at the quadripartite meeting recently held in London among the joint Cuban-Angolan delegation and the United States and South Africa on the situation in southern Africa. Western press agencies are speculating on another quadripartite meeting on the same subject this Thursday in Brazzaville, which was denied by South Africa's Foreign Ministry. -END-