More than 100 teens are safe after being rescued from a life of sex slavery.

The teens were rescued following a massive three-day, nationwide sting operation by the FBI. Investigators targeted internet sites, truck stops, casinos and the streets to locate children forced into sex trafficking.

Authorities say the alleged pimps exploited children who were in desperate need of food, clothing and a place to live. Around 150 alleged pimps were arrested during the undercover mission.

"Operation Cross Country 7" involved stings in 76 cities. The teens range in age from 13 to 17 years old.

The largest numbers of victims taken off the streets were in San Francisco, Detroit, Milwaukee, Denver and New Orleans. In the past 10 years, similar FBI crackdowns have led to 1,350 convictions.

Officials say the alleged pimps face 15 to 50 years in prison if convicted.