SB 9.24.40
sisupalah sutas tasyah
kathitas tasya sambhavah
devabhagasya kamsayam
citraketu-brhadbalau
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The son of Srutasrava was Sisupala, whose birth has already been described [in the Seventh Canto of Srimad-Bhagavatam]. Vasudeva’s brother named Devabhaga had two sons born of his wife, Kamsa. These two sons were Citraketu and Brhadbala.