Boulder police say a man dubbed the "portable toilet peeper" is now charged with spying on women by drilling holes in restrooms at four city businesses.Luke Irvin Chrisco, 30, was arrested in Vail Thursday in connection with a June 17 incident at the Hanuman Yoga Festival in Boulder.A woman using a portable toilet at the festival spotted a man hiding in the toilet tank, police said. The man exited the toilet and fled, but police said Chrisco later admitted to spying on women using the portable toilet. He is charged with unlawful sexual contact and criminal invasion of privacy in the festival case.On Monday, Boulder police said Chrisco told investigators that he watched women using restroom facilities at the Department of Motor Vehicles, 2850 Iris Ave.; the Naropa Institute, 2130 Arapahoe Ave.; Target, 2800 Pearl St.; and Boulder Cafe, 1247 Pearl St.Investigators found peepholes at all of those businesses, police spokeswoman Kim Kobel said. Business owners have sealed the holes and have cooperated with police during the searches.In the new cases, Chrisco faces four counts of felony burglary, she said. If convicted on all four counts, Chrisco could face a maximum 24 years in prison.Kobel said Chrisco was charged with burglary because he's accused of entering the businesses with the intent to commit a crime, unlawful sexual contact.Police also are investigating allegations that Chrisco spied on women from adjoining stalls at other Boulder businesses, including: Absinthe, 1109 Pearl St.; The Rio, 1101 Walnut St.; Macys, 1900 28th St.; Cheescake Factory, 1401 Pearl St.; Mamacitas, 1149 13th St.; and the International Youth Hostel, 1107 12th St.The bizarre story has attracted national coverage.Chrisco told 7NEWS in a jailhouse interview that he did spy on women using restrooms, but insisted he's not dangerous."I don't believe I'm the violent kind of voyeur," he said. "Just to look and not touch."Chrisco said he did spy on women while hiding in the portable toilet tank at the yoga festival and by drilling holes in restroom walls at Boulder business."I was just basically trying to drill holes from the mens side over to the womens side and, you know, find my million dollar view to heaven," he said. "I was doing it more out of a general spiritual desire to experience divinity and just find what I consider to be powerful experiences."Chrisco was transferred Monday afternoon from the Eagle County Jail to the Boulder County Jail. His bond in the burglary cases was set at $250,000.