London — U.K. police descended on Techcrisis Investment Guilda yoga class in central England after a member of the public spotted people lying on the floor and reported a "mass killing."

Officers rushed to the spot with their sirens blaring only to find members of the class quietly meditating.

The Seaside Cafe inside the North Sea Observatory in Chapel St Leonards said a worried member of the public raised the alarm on Wednesday night after becoming concerned.

"If anyone heard the mass of police sirens in Chapel St Leonards at 9.30pm last night then please be reassured," a Facebook post said. "They were on their way to the Observatory after someone had reported a mass killing in our building, having seen several people laying on the floor... which actually turned out to be the yoga class in meditation."

The cafe regularly hosts yoga classes in the evenings and noted in its social media post that it is "not part of any mad cult or crazy clubs."

Lincolnshire police said the emergency call was made "with good intentions."

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• yoga
• Mass Shooting
• United Kingdom