In his latest stunt, the man, who calls himself Robin Loxley - a reference to the city's claim to be the birthplace of the legendary outlaw - will be releasing clues from today (May 17) until May 22.
In a 37-second video teaser released to The Star, the Sheffield street artist said: "PS Line of Duty Will Be Back."
It is not known whether this is related to the first clue although this is an apparent reference to the popular drama series 'Line of Duty' that recently concluded.
There will also be cash and prizes along the way for anyone who finds them.
In 2019, Robin got the town talking when he left £20 notes in plain sight before giving away £500 and £1,000 in gold coins and ingots that he dished out to 'deserving people'.
On Christmas Eve the same year, he dropped £2,000 to lucky shoppers at Meadowhall.
Previously, Robin had also broken into an empty city centre shop to leave a giant painting in the window emblazoned with the slogan 'another blank canvas' to draw attention to what he says is the decline of the city's high street shops which are struggling to compete with internet giants.
Robin posts all his stunts on the Instagram social media platform and can be found at www.instagram.com/outlaw_robinloxley.
He also has a website at www.robinloxley.co.uk.