Police in the Netherlands kicked in a man's front door in response to an emergency call.
It soon became apparent that the "terrifying screams" which had been reported were actually the sound of the man singing along to opera.
A concerned neighbour had called police to report domestic violence.
Police officers who arrived at the property also heard screaming coming from inside. When they tried to break in, the man, wearing headphones, came to the door.
It happened on Tuesday in Buitenveldert, a southern area of Amsterdam. Police said everyone concerned had laughed about the matter.
The name of the man has not been released - nor has the name of the opera he was singing along with.