Four high school wrestlers in Oklahoma were charged Monday with raping two other wrestlers — including a 12-year-old boy — on a school bus after a tournament last month. 
 
 One of the alleged assailants, Tanner Shipman, 18, was charged as an adult, according to documents filed by prosecutors in Garvin County, south of Oklahoma City. He faces three counts of rape by instrumentation. 
 
 The other three, who NBC News is not naming, are 17 and 16, and were charged as youthful offenders. Two are accused of the same crimes as Shipman; one has been charged with a single count. 
 
 The second victim was 16, the documents say. 
 
 According to prosecutors, the junior varsity wrestlers were on a school bus returning to Norman after Jan. 9 tournament in Pauls Valley, approximately 40 miles away, when Shipman "restrained" the 16-year-old under a bus seat while two friends sexually assaulted him. 
 
 Later, Shipman and others assaulted a 12-year-old — identified in the documents as "Victim B" — at the back of the bus and again in a "secluded area" near Norman North High School after the bus had returned, the documents say. 
 
 "When Victim B escapes, Tanner and his friends attempt to do all of this again as Tanner tackles Victim B and forces him between two parked vehicles," the documents state. "The incident finally ends when Victim B's parent arrives in the parking lot." 
 
 It is unclear if Shipman and the others have lawyers; attempts to reach addresses listed in the charging documents were unsuccessful. 
 
 In a statement Monday, Norman Public Schools superintendent Joseph Siano said that "we are well-prepared to handle situations like this and have programs in place to support students who experience trauma. And, while we believe the district's policies regarding student supervision are strong, we continuously evaluate our procedures to ensure they are followed." 
 
 Siano said the "vast majority" of the student athletes "demonstrate positive behavior and strong character traits." 
 
 After the incident was initially reported, several students were suspended, an adjunct coach who was supervising the students was "immediately" dismissed, and a second coach was suspended, the school said in a statement. 

 Four high school wrestlers from Norman North are facing rape charges following what was initially described as a “disturbing incident” on a junior varsity wresting team bus in January. 
 
 Three of the four wrestlers, who police have identified as 18-year-old Tanner Shane Shipman, 17-year-old Sage Griffen Gandenberger, and 16-year-old Chase Denton Smith, were charged with three counts of rape by instrumentation against two male victims, ages 16 and 12. 
 
 1/14/2016 Related Story: Norman North Investigating 'Disturbing' Report Regarding JV Wrestling Team 
 
 A fourth wrestler, identified as 17-year-old Hunter Oren Matthews, was charged with one count of rape by instrumentation of the 12-year-old. 
 
 The alleged incident occurred on Jan. 9, as the junior varsity wrestling team was returning to Norman from a tournament in Pauls Valley. According to the court documents, Shipman, Gandenberger and Smith each assaulted the 16-year-old at the back of the bus by restraining him and using their fingers to sexually assault the boy over his clothing. 
 
 Later, all four suspects attempted to lure a 12-year-old middle school wrestler to the back of the bus as well, before pulling the boy to the back. All four suspects then assault the boy in the same manner as before. This time, however, the suspects placed a condom over their fingers before the assault, the report states. 
 
 When the bus arrived back at Norman North, the 12-year-old was assaulted again; once in a secluded area on the side of the building and again between two vehicle in the parking lot when the victim briefly escaped. According to the report, the assault only ended when the 12-year-old boy’s parent arrived at the school. 
 
 Shipman was charged with one count of Rape By Instrumentation with Force and one count of Rape By Instrumentation Upon a Person Under 14. 
 
 Gandenberger was charged with one count of Rape By Instrumentation with Force and two counts of Rape By Instrumentation Upon a Person Under 14. 
 
 Smith was charged with one count of Rape By Instrumentation with Force and two counts of Rape By Instrumentation Upon a Person Under 14. 
 
 Matthews was charged with one count of Rape By Instrumentation Upon a Person Under 14. 
 
 All of the suspects have been suspended and are no longer in school. One adjunct coach was fired and another coach was placed on suspension when the incident was first reported. News 9 has learned that the second coach has now resigned. 
 
 Norman Schools Superintendent Dr. Joseph Siano released the following statement on this situation: 
 
 “Student safety is a top priority and we followed procedures we have in place that allow us to effectively investigate and take swift action in these situations. We appreciate the individuals who came forward to provide information, the Norman Police Department’s thorough investigation and the quick action by the District Attorney on this incident. We are well-prepared to handle situations like this and have programs in place to support students who experience trauma. And, while we believe the district’s policies regarding student supervision are strong, we continuously evaluate our procedures to ensure they are followed. As we address the inappropriate behavior displayed by several students, we remain committed to supporting the vast majority of our student athletes, who are quality individuals that demonstrate positive behavior and strong character traits.” 
 
 Keep checking with News 9 and News9.com for more information.
– Four high school wrestlers in Oklahoma have been charged with rape over what prosecutors describe as a very disturbing incident on a team bus after a tournament in January. According to prosecutors, the students—18-year-old Tanner Shipman and three others under 18—restrained and assaulted a 16-year-old student at the back of the bus before attacking a 12-year-old boy on the bus and again in a secluded area at Norman North High School, reports NBC News. Shipman has been charged as an adult with offenses including "Rape by Instrumentation Upon a Person Under 14." The other three have been charged as juveniles. Prosecutors say the wrestlers restrained the 16-year-old boy before assaulting him over his clothing with their fingers and later did the same to the 12-year-old, this time with condoms over their fingers, News 9 reports. According to court documents, the assault on the younger boy only ended when a parent arrived to pick him up. All four students have been suspended. One coach who was supposed to be supervising the students has been fired and another resigned after being suspended.