Peter reported to the other believers.

Acts 12:12-17

12 When Peter realized that God had rescued him, he went to Mary’s house. She was the mother of John whose other name was Mark. Many believers had assembled there, and they were praying that God would help Peter somehow. 13 When Peter knocked at the outer entrance, a servant girl named Rhoda came to find out who was outside the door. 14 When Peter answered her, she recognized his voice, but she was so happy and excited that she did not open the door! Instead, she ran back into the house. She excitedly announced to the other believers that Peter was standing outside the door. 15 But one of them said to her, “You (sg) are crazy!” But she continued saying that it was really true. Then they repeatedly said, “No, it cannot be Peter. It is probably the angel who was guarding him who has come (OR, It is the angel who has guarded/protected him, and he has come to tell us that Peter has died.)” 16 But Peter continued knocking on the door. So when someone finally opened the door, they saw that it was Peter, and they were completely amazed! 17 Peter motioned with his hand for them to be quiet. Then he told them exactly how the Lord God had led him out of the prison. He also said, “Tell James, the leader of our congregation, and our other fellow believers what has happened.” Then Peter left and went away to another town.