Investigators are trying to determine the identities of children depicted in pornographic images -- and the images' origins -- that were found strewn about the Spring Lake Park home of John C. Heuer, who is charged with kidnapping and sexually assaulting an 8-year-old girl this week.

Authorities had said there could be more victims, but exactly what concerned them didn't become clear until Paul Young with the Anoka County attorney's office revealed Thursday that authorities found an "abundance" of porn and multiple female undergarments in Heuer's townhouse.

The undergarments were found in a safe, Young told Anoka County District Judge James A. Cunningham Jr. at Heuer's bail hearing.

"These allegations certainly meet every child's and parent's worst fears of abduction," said Young, division chief of the county attorney's Violent Crime Team. "There was an abundance of pornography, including child porn."

Heuer, 48, was charged Wednesday with two counts of first-degree criminal sexual conduct and one count each of second-degree criminal sexual conduct and kidnapping in the girl's abduction Sunday evening from a laundromat on Rice Street at Larpenteur Avenue in St. Paul.

Detective Mike Lapham, Anoka County sheriff's lead investigator on the case, said that the pictures did not appear to depict the girl, and that her undergarments were not among those seized.

Investigators will vet the images through the National Center for Missing and Exploited Children.

"If it's canned stuff from the Internet or personal stuff, we just don't know yet," Lapham said. "We don't want to leave any stone unturned."

The investigation will likely take several weeks, he said.

"The porn was around the home, all around the home," Young said.

Authorities are concerned there could be more victims, and that Heuer's employment as a long-distance truck driver could complicate that investigation.

Heuer's bail was set at $800,000, with the condition that he have no contact with the victim.

Cunningham also ruled that Heuer was ineligible for a public defender, a decision typically made based on income.

According to the charges against Heuer: He was drinking at a bar and strip club Sunday. He later went to the Giant Wash Coin Laundry next door and told an 8-year-old girl and her older sister that they were pretty. He left and returned several minutes later, luring away the 8-year-old.

The abduction was reported about 6:40 p.m. Heuer allegedly took the girl home where he kissed her, had oral sex with her and fondled her. She escaped and was found outside by neighbors about 7:20 p.m.

Heuer was arrested Monday. His next court date is June 1.

Chao Xiong • 612-270-4708