2 Samuel 13:34

But Absalom fled. And the young man that kept the watch lifted up his eyes, and looked, and, behold, there came much people by the way of the hill side behind him.

Absalom ordered Amnon to be struck down and then took flight, while the young lookout raised his eyes and discerned a large body of travelers advancing along the hillside road behind him. The killing was carried out at his command, and his immediate response was to flee from the scene as the watchman reported the approaching multitude. From that flight he went on to Talmai, the king of Geshur, who was his maternal grandfather through his mother.