Jeremiah 41:15

41:15 But Ishmael son of Nethaniah managed to escape from Johanan along with eight of his men, and he went on over to Ammon.

Jeremiah 41:9

41:9 Now the cistern where Ishmael threw all the dead bodies of those he had killed was a large one that King Asa had constructed as part of his defenses against King Baasha of Israel. Ishmael son of Nethaniah filled it with dead bodies.