BBC NEWS were forced to apologise after a technical blunder plagued its bulletin.
The broadcaster introduced Friday night's News at 10 programme but it didn't go according to plan.
As presenter Reeta Chakrabarti brought viewers the headlines, a loud sound could be heard.
The 59-year-old carried on presenting the bulletin despite viewers hearing what appeared to be a siren.
Reeta eventually addressed the technical blunder as she brought the national news to a close.
She said: "And to just to say that some of our viewers may have heard audio interference at the start of our programme tonight.
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"Apologies for that."
However, it resulted in some viewers switching off and getting a jump scare.
Taking to social media, one Beeb fan said: "Hell of a siren sound on BBC One just now."
A second wrote: "BBC news app just made me jump out of my skin with the notification noise coming through my headphones."
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"When are viewers and licence payers going to get an apology and explanation for the weird noise just before the beginning of the News at Ten? Why no on screen message yet," fumed a third.
While a fourth commented: "What was that weird noise on BBC One, started just before @bbcnews at 10PM & continued for a bit into the news? It sounded like an alarm: heard it on usual over air broadcast & live iPlayer."
It's not the first blunder to hit the BBC, with a recent gaffe seeing a presenter ruin their niece's surprise birthday live on air.