An elderly man shocked visitors when he got undressed and touched himself inappropriately in the middle of a Norwich park.
It happened at Sparhawk Avenue Park in Sprowston on Saturday, June 5.
At around 3pm, the man took off his grey vest and shorts in front of other people at the park, before touching himself.
He left after police were called and had disappeared by the time officers arrived.
Norfolk Police is now appealing for help to identify the man.
Anyone who recognises the man or has any information about the incident can call PC Daniel Beales at Norfolk Police on 101 quoting reference 36/38835/21.
Alternatively, they can contact Crimestoppers anonymously on 0800 555 111.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here