An aerial view of Anderson Hall at Kansas State University. Students at Kansas State University and the University of Kansas have been warned of a serial rapist targeting female students in the state. (Photo: Courtesy of Kansas State University)

A man who stalks college coeds, breaks into their off-campus residences and rapes them at gunpoint has remained at large for nearly two decades, Kansas authorities announced Thursday at a press conference.

The Kansas College Rapist may have attacked—or may still be stalking—more young women beyond the 15 victims already known to police, they added.

Investigators are hoping to find any more unknown victims, gather more witnesses and information about the known cases—and also provide a standing, crucial warning to the students of Kansas State University and the University of Kansas.

“Our work is not done until we can declare with certainty that this assailant will never again pose a threat to our communities,” the two agencies, the Riley County and Lawrence police, announced in their latest statement.

The Kansas attorney general highlighted the pursuit of the unnamed serial rapist in 2009 at a press conference, which involved 14 women between October 2000 and December 2008.

The same man was apparently attacking young sleeping college students on the two campuses, about 80 miles apart, on either side of Topeka. 

The rapist would apparently watch the women to know their patterns before the attacks.

The intruder would don a mask, and then gain entry to an off-campus residence between 2 a.m. and 4:30 a.m., while the student was asleep, and almost always while classes were on break at the school, authorities said. The victims, who were almost always alone, had locked their doors—but police found no signs of forced entry at the crime scenes.

The rapist would show a handgun, make a threat for compliance and then rape the women.

“While the physical violence of the assailant was usually limited to the rape itself, these were all very violent acts carried out by an assailant who did so in a cold, calm, calculated manner,” they explained.

But it was the latest connection to a later incident that prompted the new name for the Kansas College Rapist, and a new website, as part of a major public campaign to catch the at-large attacker.

The man again accessed a private residence on July 27, 2015 in the 1400 block of Watson Place in Manhattan that prompted the new tack in the campaign to find the Kansas College Rapist.

“A lengthy investigation into the incident has led us to conclude that there is a high probability that the assailant is the same assailant from the previous cases,” they added.

But the seven-year gap between the 2008 attack and the 2015 attack has authorities looking for further victims and incidents that may help crack the case.

The person is expected to be a white male, about 5’10”, who is heavy-set—and a prominent stomach is one of the features common in the descriptions from most of the victims (although the height spans from 5’9” to 6’0”). Based on the timeline of the crimes, the suspect is expected to be at least 33 years old at the time of the incident in 2015.

Case investigators have decided to keep the status of DNA evidence in the case—whether there is a CODIS or full genetic profile, and whether familial searching is being employed – withheld from the public, the Riley County Police told Forensic Magazine.

“While we are currently working on a number of leads that we are not in a position to discuss in order not to jeopardize the investigation, major cases are frequently solved with information provided by citizens,” they said, in their prepared release.