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Washington (CNN) -- The FBI and other law enforcement agencies have broken up child prostitution rings operating in 57 cities.

More than 2,500 officers were involved in Operation Cross Country Six which took place Friday, Saturday and Sunday.

"Over the past 72 hours the FBI and it's state and local law enforcement partners conducted 104 arrests and rescued 79 children who were being held against their will and conducting child prostitution," said Kevin Perkins, FBI Acting Executive Assistant Director.

"Many times the children that are taken in, in these types of criminal activities are children that are disaffected, they are from broken homes, they may be on the street themselves - they are really looking for a meal, they are looking for shelter, they are looking for someone to take care of them and that's really the first approach that's made," said Perkins.

At least 100-thousand American kids are lured into prostitution each year, according to the National Center for Missing and Exploited Children.