Police were called to a yoga class after a worried member of the public saw people lying on the floor and reported a "mass killing".
Those taking part in a peaceful yoga session at the Seascape Cafe, inside the North Sea Observatory in Chapel St Leonards, Lincolnshire, got more than they bargained for when officers turned up on Wednesday night.
Sharing details of what happened on its Facebook page, the cafe said someone had "reported a mass killing" after seeing people on the floor inside the building.
It wrote: “If anyone heard the mass of police sirens in Chapel St Leonards at 9.30pm last night then please be reassured…
“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.
“Thank you to Lincolnshire Police for their prompt response. I can’t imagine for one moment what would have being going through their minds on the way.”
The cafe regularly plays host to yoga classes in the evenings, with their Facebook post adding: “We are not part of any mad cult or crazy clubs.
“All in all, this situation turned out positive and we are of course grateful.”
Lincolnshire Police confirmed the call was made at 8.56pm “with good intentions”.
A spokesperson said: “A call was made following concerns for the occupants of the North Sea Observatory, at Chapel St Leonards.
“Officers attended, we’re happy to report everyone was safe and well.”