Police called to reports of a bloody axe attack in progress were confronted with a bunch of young movie-makers shooting a zombie film.
North Yorkshire Police said the mix-up happened in Harrogate today.
It was revealed on Twitter this afternoon, with controllers posting: "999 call reporting an axe attack in #Harrogate. Several officers at scene. Turns out 4 youths making a zombie film using fake blood."
The revelation was greeted with predicable puns from other Twitter users.
Seeing the funny side, the control room team responded by Tweeting: "I t could have had #Grave consequences though! Glad it was a call with good intent."