Armed police were sent to the scene close to Gainsborough train station after people reportedly heard ‘gun shots’.
Officers were deployed to Summergangs Lane in Gainsborough where a fire was located with waste burning.
It is believed this was the cause of the noise heard.
A spokesperson for Lincolnshire Police said: “Following a report of possible gun shots being heard we deployed officers to Summer Gangs Lane in Gainsborough.
“We did locate a fire with waste burning and believe this to be the cause of the noise heard. Nothing else untoward was found and our officers have now resumed.”