2 Kings 17:4-5

4Then King Shalmaneser discovered that Hoshea had decided to turn against him. Hoshea had sent a message to So, the king of Egypt, to ask for his help. He had also refused to send the taxes for that year to the king of Assyria. So King Shalmaneser took hold of Hoshea and he put him in prison.

5The king of Assyria took his army and he marched through all the land of Israel. He attacked Samaria. His army made their camp around the city for three years.