Judges 3:23-25

23Then Ehud went out to the porch; he shut the doors of the upper room behind him and locked them.

24After 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.”

25They 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.