The number of sexual offenses reported on campus at Kansas University more than quadrupled in 2013 from the previous year, according to a new report.

There were 13 reported sex offenses in 2013 as compared with three in 2012 and two in 2011, according to the crime statistics that are based upon incidents reported to the KU Public Safety Office, Office of Student Affairs and the Department of Student Housing.

The annual report is required under a federal law called the Clery Act and submitted to the U.S. Department of Education.

The statistics were revealed as KU deals on numerous fronts with the issue of sexual assaults on campus.

On Wednesday, the school announced it was placing the Kappa Sigma fraternity on “interim suspension” because of sexual assault allegations during a party at the fraternity. KU Chancellor Bernadette Gray-Little described the Kappa Sigma allegations as “disturbing and serious.”

KU is one of 76 colleges nationwide under investigation by federal officials for how it handles sexual assault allegations.

Recently, a student complained that she was raped and that her alleged assailant was given a light sanction. Since then, students have protested against the administration and called for changes to the school’s policies on sexual assault training and how investigations are conducted.

Gray-Little appointed a task force to provide recommendations on how to improve the system.

Angela Murphy, a doctoral student and co-chair of the task force, said she believes the number of reported sexual assaults has increased as the profile of the Office of Institutional Opportunity and Access increases and the issue of sexual assaults on campus becomes more well known in Lawrence and nationally. At KU, the IOA investigates allegations of sexual assault.

But Murphy said the 13 reported incidents is nowhere near the actual number of assaults.

“If you look statistically across the nation on average for each assault reported, eight go unreported,” she said. A report from the National Research Council last year said 80 percent of sexual assaults go unreported to law enforcement.

Murphy said she is encouraging students to fill out a 2014 climate survey sent out by the IOA that seeks to get information from students about sexual assaults on campus. She said she hopes that provides a better picture of how prevalent assaults are.

KU Police Capt. James Anguiano said sexual assaults are under-reported but he said that situation is improving.

“The education is out there. We want to let people know this is taken very seriously. If we get a call on sexual assault, we will investigate it fully,” he said.

In other on-campus crime statistics in the report, there were 27 burglaries in 2013 as compared with 37 in 2012 and 28 in 2011. In addition there were 37 liquor law arrests in 2013, 27 in 2012 and 54 in 2011, and 71 drug law arrests in 2013, 57 in 2012 and 49 in 2011.