2 Kings 9:14-15

Then Jehu plotted against King Joram, who was in Jezreel, where he had gone to recover from the wounds which he had received in the battle at Ramoth against King Hazael of Syria. So Jehu said to his fellow-officers, “If you are with me, make sure that no one slips out of Ramoth to go and warn the people in Jezreel.”