The data describes relationships between members of the Islamic State supplied to the BBC by IS investigation team. 1-mode matrices 56 x 56 persons by persons undirected binary ties. The data includes three matrices with three types of relationships: Links (relationship definition unknown) Components & friends (former companion, close, friends, close coordination, most important companion, close relationship) Kinship (brothers, brothers working together, young brother, brother, married to sister, son)