Lincolnshire Police say the call was made with 'good intentions'.
Yoga enthusiasts in Lincolnshire had their session interrupted after a member of the public saw people lying down and reported a "mass killing".
The Seascape Cafe, based at the North Sea Observatory, said on Facebook: "If anyone heard the mass of police sirens in Chapel St Leonards at 9.30pm last night then please be reassured.
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