Police were called to a children's play park in Sunderland following a report of a man acting suspiciously.
The incident took place yesterday afternoon in Herrington Park.
Police say there is nothing to suggest the man was armed with a knife - as was claimed on social media.
A Northumbria Police spokesman said: "At around 4.40pm yesterday (Monday) police received a report of a man acting suspiciously in Herrington Park in Sunderland.
"Officers attended but the man had left the area.
"Inquiries are ongoing but there is nothing to suggest the man had a knife or that there is any danger to members of the public."