Numbers 25:14-15
25:14 Now the name of the Israelite who was stabbed – the one who was stabbed with the Midianite woman – was Zimri son of Salu, a leader of a clan of the Simeonites.
25:15 The name of the Midianite woman who was killed was Cozbi daughter of Zur. He was a leader over the people of a clan of Midian.
Numbers 35:21
35:21 or with enmity he strikes him with his hand and he dies, the one who struck him must surely be put to death, for he is a murderer. The avenger of blood must kill the murderer when he meets him.