Deuteronomy 19:12
then the elders of his city shall send and bring him there, and deliver him into the hand of the avenger of blood, that he may die.
World English Bible (Public Domain)
In context
Before · Deuteronomy 19:10–11
10This is so that innocent blood will not be shed in the middle of your land which the LORD your God gives you for an inheritance, leaving blood guilt on you. 11But if any man hates his neighbor, lies in wait for him, rises up against him, strikes him mortally so that he dies, and he flees into one of these cities;
12then the elders of his city shall send and bring him there, and deliver him into the hand of the avenger of blood, that he may die.
After · Deuteronomy 19:13–14
13Your eye shall not pity him, but you shall purge the innocent blood from Israel that it may go well with you. 14You shall not remove your neighbor’s landmark, which they of old time have set, in your inheritance which you shall inherit, in the land that the LORD your God gives you to possess.