Judges 3:19-26 NIV
But on reaching the stone images near Gilgal he himself went back to Eglon and said, “Your Majesty, I have a secret message for you.”
The king said to his attendants, “Leave us!” And they all left.
Ehud then approached him while he was sitting alone in the upper room of his palace and said, “I have a message from God for you.” As the king rose from his seat, Ehud reached with his left hand, drew the sword from his right thigh and plunged it into the king’s belly. Even the handle sank in after the blade, and his bowels discharged. Ehud did not pull the sword out, and the fat closed in over it. Then Ehud went out to the porch; he shut the doors of the upper room behind him and locked them.
After he had gone, the servants came and found the doors of the upper room locked. They said, “He must be relieving himself in the inner room of the palace.” They waited to the point of embarrassment, but when he did not open the doors of the room, they took a key and unlocked them. There they saw their lord fallen to the floor, dead.
While they waited, Ehud got away. He passed by the stone images and escaped to Seirah.
NIV: New International Version