Three teenagers have denied forcing other girls as young as 13 into prostitution in Ottawa.
Police say the girls, who were 15 and 16 years old when they were arrested last summer, operated a prostitution ring in the Canadian capital without adult guidance.
They allegedly used social media sites such as Facebook to lure victims to a house, where they were abducted and offered to adult clients.
The teenagers, who are charged with 74 offences, including human trafficking, forcible confinement and sexual assault, as well as making and distributing child pornography, appeared in court on Monday.
The court was told they encouraged or forced girls to take drugs before telling them they would become escorts.
It was claimed that if they refused, they were threatened with violence and blackmail.
One girl was allegedly forced kicking and screaming into a man’s car at a petrol station. The court heard she escaped but was quickly caught and dragged back.
Another alleged victim was dropped off by her mother at the house of one of the accused, only to return home the next day wearing makeup, high heels and a coat that did not belong to her.
Prosecutors said one of the accused would send photographs of a new recruit to prospective clients from her mobile phone.