A shrill nighttime sound detected overnight during the Christmas period has baffled people in Writtle.
One reader recorded the high pitched mystery sound below on video. It lasts for around 30 seconds and is enough to make the hairs stand up on the back of your neck.
However, the pitch of the sound means it could just as easily be an alarm, although this hasn't stopped one reader from comparing the sound to an apocalyptic one, similar to that heard at the end of the video below.
Have you heard it, or do you have any suggestions for what it could be? Register and post your comments below.
