POLICE are hunting a pervert who secretly filmed up women's skirts - on a street in Norwich called Gentleman's Walk.

Cops today issued CCTV footage and stills of the sex beast who got his thrills during the Run Norwich event.

3 Police are hunting this man, who they say filmed up women spectators' skirts during the charity run Credit: Wessex News

He is thought to have placed a selfie stick on the ground to peer up women's skirts and take photos of them as they craned forward to cheer on the runners passing through Gentleman's Walk in the city centre.

Police say he secretly filmed as tens of thousands of spectators lined the route to watch the runners stream past.

They received reports of him taking photos up the skirt of at least one woman but it's thought he tried to grab shots of other victims leaning forward for a better view, unaware he was behind them with his selfie stick and camera.

related stories video nasty Alicante pervert secretly filmed female tourists stripping off who took offer of free accommodation in his flat INDECENT PROPOSAL Pervert posts sick ad offering ‘stunning’ homeless women shelter in exchange for SEX TELL ME UR BRA SIZE FIRST Pervert who sent lewd pics to 'underage girls' snared by paedo hunter KNICKER NICKER Sickening haul of 150 items of women's UNDERWEAR found stashed at home of pervert farmer 'MY SON IS A SEX DANGER' Mum issues warning after her pervert son is released from prison for sex attack

It occurred on Sunday August 7, but police have only just released the CCTV after studying hours of film to narrow it down to the suspect.

A spokesman said this morning: "Anyone who may recognise the man on the video clip, or anyone with information, should contact PC Michael Pearce at Norwich Police Station on 101.

"Alternatively contact independent charity Crimestoppers anonymously om 0800 555111 or via their online form at http://www.crimestoppers-uk.org/."

3 Charity runners make their way along the route in Norwich city centre earlier this month Credit: Wessex News

3 Police say the unidentified man used a selfie stick to film under women's dresses Credit: Wessex News

We pay for your stories! Do you have a story for The Sun Online news team? Email us at tips@the-sun.co.uk or call 0207 782 4368.