Four people are behind bars accused of coming to the Valley to have sex with a teenager. What they didn't know is that the teen was really an undercover McAllen police officer.

The two groups joined forces for an under cover operation that lasted ten days. Police officers say they created a profile on Yahoo of a fictitious 13-year-old girl and used the screen name ichat rooms.

"One arrest occurred at the airport as he got off the plane. The other arrests were staged, took place outside a local theater here in McAllen," said Rodriguez. "They basically thought they were going to the movies with the 13-year old and go from there."

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