Las Vegas police help Phoenix authorities bust a child prostitution ring.

Working on information they received from Metro, cops in Phoenix busted the group Thursday.

Cops found a 16-year-old working as a prostitute, along with two adults and their pimp.

All of the subjects had recently arrived from Las Vegas.

The 16-year old was a runaway from California.

Detectives believe this case is connected to interstate trafficking in prostitution between California, Arizona and Nevada.