An East St. Louis man accused of having sex with a Warren County teen has been sentenced to five years in prison.Gregory Cook, 23, pleaded guilty March 16 to second-degree statutory rape and second-degree statutory sodomy stemming from a 2014 incident in which he allegedly had sex with a 15-year-old who he knew was underage.Cook was sentenced after agreeing to a plea deal with the Warren County prosecuting attorney’s office, according to Warren County Circuit Court documents. Both convictions came with five-year sentences to run concurrently, with time served between arrest and conviction credited to Cook’s sentence.The sexual contact allegedly occurred around Sept. 9, 2014, in a home on Fort Hancock in Wright City. Cook was 21 at the time, according to a police report.An FBI agent contacted a Wright City detective in October 2014 about the allegations. When Cook was interviewed by an Illinois State Police trooper, he admitted to having sex with the girl, according to the report. The victim confirmed in a subsequent interview with a representative from the Child’s Advocacy Center that the incident occurred. She allegedly advised Cook about her age prior to them having sex.Gregory Cook