Police are investigating after footage emerged on social media of a naked man wearing a black mask and trainers walking down the street at night.
The video, which has been shared widely online, is understood to have been filmed in Lytham, Lancashire.
It shows the man wearing only the mask and a pair of black and white trainers as he walks along a row of residential homes.
Lancashire Police said the incident took place at just before 01:00 BST on 18 July in the area of Westby Street, Cleveland Road and Bannister Street.
A spokesman said they were aware of the “concerning video”.
“This incident was not initially reported to police and has only been brought to our attention after it has been viewed on Facebook,” he said.
“Fylde Rural Task Force are currently conducting CCTV and house-to-house inquiries and would like to reassure you that we are taking this matter seriously.”
