Swedish police are on the hunt for a man who likes bicycles a little too much.
Fed up that someone was slashing his tyres, cyclist Per Edstrom set up a camera outside his home and caught the bike molester red-handed.
Footage from Mr Edstrom's camera shows a hooded man cutting open a tyre and then pleasuring himself as the tyre deflates.
Mr Edstrom told Swedish paper Kvällsposten: "My girlfriend finds it all a little concerning; you never know if he has checked her out in some way, and whether it is a picture of her he has in his hand when he is masturbating.
"This man is probably completely harmless, bicycles are just his thing. I am not scared of him, but mostly irritated over all the punctures I have had to fix."
Police in the city of Osterlund believe Edstrom's bike-lover could be linked to a series of similar crimes in the area five years ago.
Back then a 35-year-old man was arrested for allegedly slashing the tyres of 20 bikes and masturbating over their saddles.