The lawsuit was filed on March 6 in Los Angeles by producer and songwriter Micha Otano. Otano alleges that Ocean copied his song titled "Daylight" and turned it into "Lost." In addition to Ocean, the lawsuit also names producer Malay, Island Def Jam and Universal.
The album's liner notes don't specify the producer, but they do credit Otano as a "Lost" songwriter. See the full lawsuit here.