Prosecutors allege a Beatrice man recently convicted of possessing child pornography sexually assaulted two children during a 14-year period in Lincoln, according to court documents.
Scott A. Buck Sr., 50, faces two counts of first-degree sexual assault of a minor, together punishable by up to 100 years imprisonment.
In an arrest warrant affidavit, an investigator said Buck repeatedly assaulted his victims between December 1990 and December 2004. Both of the children knew him.
The alleged abuse didn't surface until last spring, when a state investigator detected Buck had child pornography.
In May, law enforcement investigators found numerous child porn videos on a desktop computer in his Beatrice home, according to court documents.
After the discovery, investigators interviewed Buck's alleged victims, the arrest warrant affidavit said.
Buck was arrested Monday at the Gage County jail and brought to the Lancaster County jail.
He had been awaiting sentencing after pleading guilty to three counts of possession of child pornography in November. He faces up to 60 years in prison at his sentencing next month.
Buck appeared in Lancaster County Count Tuesday afternoon and was ordered not to contact either of his accusers or anyone younger than 18.
He remained in jail on $750,000 bond.