Residents of Orange County, California were given a shock recently as their television viewing was interrupted by a mysterious emergency broadcast.
The broadcast appeared at 11:05am on Thursday 21 September (local time), across multiple channels.
The message featured the text "emergency alert" on screen as a man's voice boomed, "Realise this, extremely violent times will come."
It comes the same week David Meade, Christian and self-published author, predicts a planet will collide with Earth.
Mr Meade has claimed that on Sunday (NZ time) the planet 'Nibiru' will collide with earth, causing catastrophe and the world as we know it to end.
Experts are somewhat less enthused about the claims of planetary collision, with NASA saying that Nibiru doesn't exist and magazine Christianity Today calling Mr Meade a "made-up leader in a made up field".
The broadcast itself was most likely caused by an accident during testing of Orange County radio systems. One of the networks involved, Cox Communications, says the broadcast was made during emergency testing.
"With these tests, an emergency tone is sent out to initiate the test," Spokesperson Joe Camero said. "After the tone is transmitted, another tone is sent to end the message. It appears that the radio station (or stations) did not transmit the end tone to complete the test."
Mr Camero said Cox Communications technicians ended the test as soon as they became aware of the error.
Cox Communications is unsure of where the specific audio came from, but they are investigating to find the source.