QUINCY -- A former Quincy man was sentenced to 20 years in prison after he pleaded guilty to two sexual assault charges Monday in Adams County Circuit Court.
Derek L. Decker, 51, pleaded guilty to one count of criminal sexual assault and one count of predatory criminal sexual assault and was immediately sentenced by Judge Robert Adrian to 10 years for each count, which must be served consecutively.
Decker was set to go to trial Monday on the predatory criminal sexual assault charge but waived his right to a jury trial late Friday after Adrian ruled the accuser in the second case would have been allowed to testify, even though the charges hadn't gone to trial. The accuser in the first case also would have been allowed to testify in the second trial.
As part of the negotiated plea, three counts of criminal sexual assault were dropped.
Were he convicted of the charges at trial, Decker faced a prison sentence of six to 60 years for the predatory sexual assault charge, and four to 15 years for each criminal sexual assault charge. The sentences would have been served consecutively.
Decker was arrested Nov. 2, 2016, in Galesburg after an investigation that began in July on reports that Decker had inappropriate sexual contact with two minors about five years ago.
In video interviews with the two accusers at the Advocacy Network for Children, they said Decker sexually assaulted them. The incidents were alleged to occur in May and June 2012 and April 2014.
Assistant State's Attorney Anita Rodriguez said the plea agreement means the accusers would not have to testify in court.
"Certainly the conduct of the defendant is egregious and the victims have been greatly harmed by this," Rodriguez said.
Decker received credit for 195 days served in the Adams Count Jail. He will have to serve 85 percent of his sentence before he is eligible for parole, and he will face three years to life of mandatory supervised release.