After Herod had a thorough search made for him and did not find him, he cross-examined the guards and ordered that they be executed. Then Herod went from Judea to Caesarea and stayed there.
References for Acts 12:19
He had been quarreling with the people of Tyre and Sidon; they now joined together and sought an audience with him. After securing the support of Blastus, a trusted personal servant of the king, they asked for peace, because they depended on the king’s country for their food supply.
References for Acts 12:20
On the appointed day Herod, wearing his royal robes, sat on his throne and delivered a public address to the people.
They shouted, “This is the voice of a god, not of a man.”
Immediately, because Herod did not give praise to God, an angel of the Lord struck him down, and he was eaten by worms and died.
References for Acts 12:23