2 Samuel 17:18
17:18 But a young man saw them on one occasion and informed Absalom. So the two of them quickly departed and went to the house of a man in Bahurim. There was a well in his courtyard, and they got down in it.
2 Samuel 19:8
19:8 So the king got up and sat at the city gate. When all the people were informed that the king was sitting at the city gate, they all came before him.
David Goes Back to Jerusalem
But the Israelite soldiers had all fled to their own homes.