An underwear-raiding burglar was arrested in Southern California after leaving semen on a college student’s laptop as he watched pornography, authorities said.

Jonathan Jose Ruiz, 19, of Orange, was arrested last week after four college students told police they left their home in Orange to attend an event during the evening of Oct. 4. The women returned about 90 minutes later and found their residence totally ransacked, with their underwear strewn throughout the home, according to the Orange County District Attorney’s Office.

Ruiz is accused of breaking into the home through a window before rifling through the women’s bedrooms, as well as using one of their laptops to download images of the victim and browse pornography websites, authorities said.

After leaving semen on the victim’s laptop, Ruiz allegedly moved the computer to another of the women’s bedrooms. He then drank milk from inside the women’s fridge and ate several cookies before leaving the milk container on a counter, prosecutors said.

The female victims reported the incident to the Orange Police Department, whose investigators responded to the home a day later and swabbed multiple items for possible DNA, including the apparent semen found on the victim’s laptop.

Days later, authorities submitted the swabs to the Orange County District Attorney’s Office Rapid DNA Program and a match was made to Ruiz, who previously submitted his DNA to a law enforcement database following his conviction for misdemeanor vandalism last year, prosecutors said.

Ruiz was arrested Thursday and authorities found two pairs of underwear from the women in his possession, as well as other items. He’s now facing more than six years in prison if convicted on residential burglary and vandalism charges, according to the district attorney.

Ruiz was released from custody early Wednesday after posting bond.