Residents at an apartment block in Schwabach, southern Germany, believed late-night pranksters were to blame for their doorbells buzzing nonstop.
But when police arrived, they found a much slimier source of the annoyance, reported multiple media outlets.
It turned out that a small slug had been sliding up and down the bell plate and repeatedly triggering the sensors.
After initially coming up short in their investigation, police officers eventually caught the mischievous mollusc in the act.
It was “brought down to size, taught about its territory boundaries and placed on a nearby stretch of grass,” police said, per The Guardian.
