President Nelson Mandela will meet Libyan leader Moammar Gadaffi in the capital Tripoli on Friday to discuss developments in the Lockerbie bombing case, his spokesman Parks Mankahlana said on Tuesday. “They are going to be conferring on the Lockerbie situation,” Mankahlana said, adding that the meeting had been decided before Mandela left South Africa for a nine-day visit to northern Europe on March 10.