Hamilton Police found a 15-year-old girl working as an escort in a downtown apartment building in mid-December and have brought three prostitution-related charges against a 27-year-old woman in connection with the girl's work. 

Police say it's the first charges they have laid under new federal prostitution laws, which took effect Dec. 6.

On Dec. 17, police heard the 15-year-old was missing, and found her three days later. She told Vice/Human Trafficking investigators that she had been working as part of an escort service "for a few weeks."

Police arrested a 27-year-old Hamilton woman on Friday and laid three charges against her: "Material benefit from sexual services", "Exercise control/Person under 18 years" and "advertising sexual service."