BLAINE, Minn. – Parents are outraged after learning a Minnesota school bus driver charged with molesting two girls in his home earlier this month has a history of similar behavior.

Glenn David Johnson, 52, faces three counts of criminal sexual conduct involving inappropriate contact with two teen girls who stayed at his home on consecutive nights earlier this month, KFGO reports.

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According to the news site:

… Johnson is accused of inappropriately touching a teenage girl who was staying at his house on March 6. The girl reported the incident to a school counselor the next day. Staff called Johnson into the school to explain himself. He said he hugged the girl before bed, but denied doing anything inappropriate.

On March 8, a teenage relative of Johnson told school staff he touched her inappropriately the previous night. The girl was aware of the incident with another girl the night before, and told a school counselor what happened.

Johnson was suspended last week from his job transporting students in the Anoka-Hennepin District to Blaine High School, Roosevelt Middle School and Jefferson Elementary, but a KARE news investigation revealed it’s not the first time he’s faced child sex abuse allegations.

Johnson allegedly admitted to rubbing a 14-year-old girl’s vaginal area in 1998, when he was 32 years old.

In an interview at the time, Anoka County Sheriff’s investigator Jodi Wallin asked Johnson: “Okay where did you touch her on her body, do you remember?”

“Yeah in between her legs,” Johnson replied, according to a transcript obtained by the news site.

Johnson pleaded guilty in the case, but received a “Stay of Adjudication” that dismissed the charges once he completed probation, and the formal conviction was scrubbed from his record in 2000.

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“No question that there seems to be a concerning pattern of conduct going back now about 20 years,” Paul Young, the Anoka County prosecutor in Johnson’s original case, told KARE.

“Since there was no conviction on his official record, the State of Minnesota granted Johnson a license that allowed him to drive school children,” according to the news site.

The Minnesota Department of Public Safety issued a formal statement that contends current laws disqualify bus drivers “based on convictions, not stays of adjudication,” which do not show up on criminal background checks.

“The statute authorizes the release of conviction data, but does not authorize the release of stays of adjudication,” the statement read.

Parents, of course, are outraged by the revelation.

“If they admitted they’re guilty there should be a law that they can’t be anywhere near a child,” parent Lois Perkins-Huff said. “You’re trusting the school, the bus company, whoever is hiring them.”

Parent Brittney Whalen said the state loophole “makes me very nervous.”

Minnesota lawmakers are now considering legislation to address the issue, based on KARE’s reports of secret sex offenders like Johnson. Gov. Mark Dayton said last month he’s “shocked” by the situation and is “working with legislators who share that concern.”

Anoka-Hennepin district officials, meanwhile, are working to reassure parents that Johnson is no longer driving their children to school and emphasizing the most recent allegations did not involve his job.

Johnson faces up to 60 years in prison and $90,000 in fines if convicted, WCCO reports.