Officers from the local Neighbourhood Policing Team have increased their patrols in Wyndham Park, Grantham, after reports of a man exposing himself in the area.
Lincolnshire Police has received two reports from the public reporting a man seen indecently exposing himself to passers-by in the last few weeks.
Police in the area have been carrying out extra patrols since the reports to talk to local residents, offer community reassurance and also to try and find a man matching the description.
One witness said he was a white man, aged in his early to mid 30s, of slim to medium build and around 5ft 9in in height, with unkempt brown hair and beard.
Anyone who has seen a man matching that description acting suspiciously in the area is asked to contact Lincolnshire Police on 101 quoting incident 256 of 08/09/2014. Alternatively contact the independent charity Crimestoppers anonymously on 0800 555 111.