**WARNING: Details in this story are graphic, and inappropriate for children.**
CLEVELAND COUNTY,Okla. -- New information about an alleged rape involving four Westmoore high school students has surfaced.
A 15-year-old girl alleges she was gang raped by four men at an apartment off-campus.
Documents that detail a separate assault took place "inside" Westmoore High school just "two weeks after" the alleged gang rape.
Shock and anger are only two words that can be used after we told one Westmoore mother about new details involving an alleged sexual assault that happened inside a classroom.
"I have no words," Robin Jowers said shaking her head. Jowers has a son who attends the high school.
According to a probable cause affidavit that was filed in Cleveland County, 18-year-old Jonathan Henderson is now facing charges of rape by instrumentation.
Court documents say, "Henderson lured victim into a classroom asking her to help him find his phone."
Moments later, according to document, "Henderson reached under the victim's skirt, using his fingers, penetrated the victim's vagina despite the fact she was wearing underwear."
"It's more than concerning, I'm very disappointed, I cant even imagine how that girl or her family," Jowers says.
Court documents show the incident was caught on video surveillance.
"They can get raped an no one knows about it? Really? No. That's unacceptable," Jowers said.
The document shows Henderson even sent texts to the victim after the assault, confirming what he had done.
"Yeah, I'd like to know why no one knows about this," Jowers said.
The Moore superintendent says parents were not notified of the incident.
"If this is going on, what else has gone on that we don't know about?" Jowers says.
We spoke with District Attorney Greg Mashburn who says formal charges have not been filed.
The Moore superintendent would only tell us they're working with local authorities and the family to comply with the investigation.