Judges 3:23-25

23Ehud escaped by way of the porch, closing and locking the doors of the upstairs room behind him.

24Ehud was gone when Eglon’s servants came in. They looked and found the doors of the upstairs room locked and thought he was relieving himself in the cool room.

25The servants waited until they became embarrassed and saw that he had still not opened the doors of the upstairs room. So they took the key and opened the doors — and there was their lord lying dead on the floor!