A bizarre, high-pitched noise has been keeping people awake in a quiet American suburb – and has spooked residents reaching out for Mulder and Scully.
It comes weeks after a strange trumpet sound horrified people across Europe and as far as Morocco.
Now the latest unexplained phenomenon is freaking-out people in Forest Grove, Oregon.
Dave Nemeyer, fire marshal of the Forest Grove Fire and Rescue service, described it as “horrendous” after a video of the sound was shared on Facebook.
He said: “The resident described to us that it was coming from the middle of the street.
“To me it sounds like the sound of train tracks, that metal screeching sound, but there are no train tracks near home.”
YouTuber Stevie B shared the sound from his loft window in Bristol.
He said: “Filmed these creepy sounds that are coming from the sky, very weird.
“I heard them as I was in my loft doing some work.
“Creeped me out so didn’t film for long.”
Strange sounds isn”t the only phenomenon giving people the chills.
Earlier this month an astonishing video emerged of bizarre clouds falling to the ground.