A young man got past SVT's security guards and into the area behind the stage at Melodifestivalen in Luleå, reports Aftonbladet.
It's a man in his 20s. He could be arrested and is now suspected of trespassing, says David Levy, officer in charge at the police.
The intrusion occurred when the rehearsals had just begun.
The alarm came to the police at 11:07.
He is, according to the complainant, said to have tried to get into the area earlier, says David Levy.
The man was served with suspicion of crime and was then released by the police.