This video shows the moment a 46-year-old man was snared by paedophile hunters in Lancaster.
The footage, filmed in Lancaster, was broadcast live on Facebook yesterday evening (July 7).
It has since been viewed by 57,000 people.
North West Hebephile Hunters, the group behind the sting, exposed the man after he allegedly engaged in explicit sexual conversation with what he believed to be a 12-year-old girl.
But the 'girl' was a member of the group posing as a child.
The man was reported to police and within 30 minutes, officers arrived at the scene.
The 'paedophile hunters' are then seen handing 'evidence' to police, including transcripts of the alleged conversations.
A Leyland man is seen being arrested at the scene and taken into custody.
Lancashire Police confirmed that a 46-year-old man had been arrested on suspicion of sexual grooming.