A teenage girl chased a flasher for two miles after he allegedy exposed himself to her in an alleyway.
Jodie Schofield, 16, was walking near her home in Salford, Greater Manchester, when she claims a man appeared and exposed himself.
She screamed and then ran after him for half an hour, covering two miles, until two builders came to her aid and held him as Jodie called police.
A 52-year-old man was arrested at the scene and has since been released on bail. Jodie, who was returning home after walking her cousin to school, said: "I saw him peeking around the corner and then he disappeared.
"I shouted at him and told him to stop but he was just laughing at me the whole time and I didn't want him to get away with it.
"I was running after him for ages – about 30 minutes – but I just didn't want him to get away.
"After a while two builders saw us and I was shouting what had happened so they managed to get hold of him and keep him there until the police arrived."
A Greater Manchester Police spokesman confirmed the incident is being investigated.
He said: "We received a call at 10.36am where an adult male had been detained by members of the public and was arrested on suspicion of indecent exposure.
"He was chased by the complainant and detained nearby by builders who had seen him running away.
"He has since been bailed until May 1, pending further enquiries."