WACO (February 6, 2013)--Nancy Foley of Killeen was sentenced to federal prison Wednesday after she pleaded guilty earlier to sex trafficking of children in a case in which girls were brought to Central Texas to work as prostitutes.

U.S. District Judge Walter S. Smith, Jr., sentenced Foley to four years in prison to be followed by three years on supervised release, and ordered her to pay a $1,000 fine and a $100 special assessment to the court.

Foley's accomplice, Jerome Maurice Cole, has pleaded guilty to similar charges, but has not yet been sentenced.

Federal criminal complaints and affidavits show that police began an investigation in April 2012 after learning there was evidence that at least three girls, all of whom were younger than 18, were brought to Killeen to work as prostitutes.

Agents were able to establish that photographs of the girls had been stored on Cole's cellular telephone and had been transmitted to an Internet website that advertised women as prostitutes in the Killeen area.

Further investigation showed the inappropriate photographs of the girls had been taken using Foley's cell phone and later were transmitted via text message to Cole's cell phone.

Police first received a message from a woman that she believed her daughter, who was a run-away, was staying in the Killeen area and could have been tricked into becoming a prostitute.