The Jefferson County Sheriff’s Office arrested a man in August on six sexual assault charges that occurred between 2004 and 2008.

63-year-old Christopher Kenny Jackson of Littleton was arrested on Aug. 23 following a six-month investigation by Jefferson county detectives, according to a press release by the First Judicial District Attorney’s Office. He is being charged with six counts of sexual assault following a search of his electronic devices.

The sheriff’s office executed a search warrant of Jackson’s home in February after the Colorado Internet Crimes Against Children (ICAC) task force linked Jackson’s IP address to an alleged upload of pornography, according to the press release. Investigators went on to search through his devices, including electronic storage devices.

They found videos involving four different women. In each incident, Jackson allegedly assaulted the women in what investigators believe to be his living room. Each of the women appeared to be unconscious and partially naked. The videos were dated between 2004 and 2008.

Investigators identified all four women in the videos, one of whom is now deceased. They contacted the three potential victims. All three said they had no memory of the incidents, but had likely met Jackson at bars in south Jefferson County, according to the release.

Jackson was taken into custody and posted a $150,000 bond. His preliminary hearing is scheduled forn Jan. 9.

Investigators are continuing to search through evidence. They believe there may be more victims. Anyone with information is asked to contact First Judicial District Attorney’s Office Investigator Kim Holmes at 303-271-6915.