Nas is the subject of a federal lawsuit filed Friday.
In December 2011, American concert promoter Patrick Allocco was kidnapped allegedly because Nas failed to show up for a New Year's Eve concert in Angola after getting paid.
Allocco said he was held ransom by Angolan promoters because they wanted their money back. The promoter was released in February 2012.
TMZ reports that according to a new federal lawsuit, Allocco is following up on an earlier promise and is suing Nas for $10 million, claiming that he suffered psychologically, physically, and financially over the 50 days he was held captive.
Nas spoke on the matter in March 2012, stating that he was being used as a scapegoat by the promoter, and that the concert had significant planning issues.