A Clark County school custodian is headed to prison after masturbating into a teacher's belongings dozens of times.
But, tonight, an explosive Contact 13 investigation reveals the case the school district doesn't want you to hear.
Chief Investigator Darcy Spears uncovers the school cop caught masturbating on campus in this Action News exclusive.
When custodian Michael Timothy Skelton was caught on camera masturbating in a Dondero Elementary classroom in December, it was Sergeant Mitch Maciszak's team making the arrest.
"This was probably a first in the District that we've had this type of investigation," Sgt. Maciszak said..
Police say Skelton admitted to about three dozen acts, committed after school hours and not involving any children.
Darcy Spears: The ultimate goal in cases like this is what?
Sgt. Maciszak: Well, we always like -- like to see some type of outcome to where some type of sentence is imposed. Either jail time -- always jail time.
Skelton cut a plea deal, putting him behind bars for two years. Then, he'll have to register as a sex offender.
Darcy Spears: Safe to say that CCSD Police takes this type of incident--masturbating on school property--very seriously?
Sgt. Maciszak: Absolutely. We take all incidents seriously. Any type of incident that could impact our children, our staff, our visitors of the school district, we want to make sure--like I said--they're safe when they come to our property.
Though Maciszak says the Skelton case is unique, our research suggests that this might not be an isolated incident.
We asked Maciszak to flash back to when he was a detective stationed at Garside Middle School.
Darcy Spears: This was a case that our research tells us involved you personally, and an Internal Affairs investigation and masturbation at Garside and pornography.
Sgt. Maciszak: You're speaking of a personnel issue and I'm not comfortable speaking with that.
It's something the CCSD Police Department has kept secret... Until now.
Contact 13 obtained an audio recording from a 2012 School Police Internal Affairs investigation.
Internal Affairs Investigator Courtney Purcell of the Bureau of Professional Standards says, "A couple of years before that, while Det. Maciszak was working Adult Education at Garside, Art Sturdivant, who used to be one of our officers but now works for Henderson Police, walked into the police office at Garside and caught Maciszak masturbating while watching pornography on his work computer.
Officer Mike Thomas: That's what Art Sturdivant told me, yes.
Darcy Spears spoke to Officer Sturdivant, who recounted what he saw that day.
He said he tried to use his key to get into the police office at Garside, but the chain lock on the inside blocked him from opening the door all the way.
He saw Maciszak jump back, bend over to cover himself and run into the back office.
Maciszak's belt was lying on the desk and there was Asian pornography on the computer screen.
Officer Mike Thomas on the audio tape says, "The tech over at Garside had constantly--it was kind of like common knowledge -- had constantly -- that computer was always crashed. It had so much pornography on it that they had to constantly go in there and fix the problem.
When we asked the District about the incident, they sent a written statement, which says, "Concerns were brought forward, which were investigated administratively. Appropriate action was taken."
But in two cases, which both involved masturbating on school property, custodian Michael Skelton was arrested, charged and sent to prison.
Because no one blew the whistle on Mitch Maciszak, his case wasn't even investigated for years.
That investigation started on the very day Maciszak was promoted to sergeant.
The outcome, our sources say? A letter of reprimand in a personnel file.
"As far as I know, this was a reprimand in the file and no criminal charges were filed?" Darcy Spears asked Sgt. Maciszak. But before he could answer, CCSD Police Captain Ken Young, who was supervising the interivew, said, "At this point, like I said, we talked about that, this is a personnel issue. So at this point we would have to conclude the interview."
Maciszak takes off his microphone, and leaves the room.
Contact 13 learned this was just the tip of the iceberg with Sgt. Maciszak.
Tomorrow on Action News at 6 p.m., we expose a pattern of what sources call police protecting their own despite many instances of sexually inappropriate behavior on the job.