Srimad Bhagavatam Canto 10, Chapter 12, Text 14

SB 10.12.14

drstvarbhakan krsna-mukhan aghasurah
kamsanusistah sa baki-bakanujah
ayam tu me sodara-nasa-krt tayor
dvayor mamainam sa-balam hanisye
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
Aghasura, who had been sent by Kamsa, was the younger brother of Putana and Bakasura. Therefore when he came and saw Krsna at the head of all the cowherd boys, he thought, “This Krsna has killed my sister and brother, Putana and Bakasura. Therefore, in order to please them both, I shall kill this Krsna, along with His assistants, the other cowherd boys.”
 
Srimad Bhagavatam Canto 10, Chapter 12, Text 13
Srimad Bhagavatam Canto 10, Chapter 12, Text 15