( CNN ) -- Workers at a Texas state school for mentally handicapped adults are believed to have been staging a `` fight club '' among residents , encouraging them to physically battle one another , police told CNN Tuesday . A cell phone containing videos of the alleged abuse at the Corpus Christi State School in Corpus Christi , Texas , was turned over to police last week , and authorities are expecting to file arrest warrants this week , Corpus Christi police Capt . Tim Wilson told CNN . The incidents are believed to have taken place in a school dormitory , Wilson said . `` This has been going on for some time , '' Wilson said . `` That is what makes this an exceptional case . It is not the workers abusing the clients , so to speak . The workers are not hitting them , but they are allowing these clients to fight with each other , thereby endangering their well-being . '' `` These people are charged with the care and custody of these clients , and they are exploiting ( them ) , '' he said . Those involved will likely face charges of injury of a disabled person , Wilson said . The charge 's severity can range up to a third-class felony , depending on the extent of a person 's involvement , he said . The actual charges , however are left up to the Nueces County District Attorney , which is participating in the investigation along with the Texas Inspector General 's Office , he said . Seven school employees have been placed on paid emergency leave by the Texas Department of Aging and Disability Services , according to spokeswoman Cecilia Fedorov . Some former workers also will be interviewed , authorities said . Fedorov said the agency received a phone call Friday from the state Department of Family and Protective Services , saying they had been alerted to the situation by police and were opening an investigation into possible abuse or neglect . The employees on leave can not come on to campus , but must sign in at the gate every day they are on leave , Fedorov said . State officials are awaiting the outcome of the investigation to determine whether they should take further action , she said . Wilson said Corpus Christi police received the cell phone a week ago , when a citizen found it and gave it to an officer working security at a hospital . The officer looked at several of the videos , then gave the phone to the police 's forensic unit for analysis . More videos were found in the phone 's memory . `` It appears it was some sort of a fight club , '' Wilson said . Twenty videos were found on the phone , with dates going back about a year . All the videos featured the school 's `` clients , '' who are severely mentally handicapped , he said . On the videos , `` they ( the clients ) are not upset like they are being forced , '' Wilson said . `` They are being more goaded into it . There 's a lot of voices on there from workers ... saying , 'Look at that , ha ha ' ... laughing , stuff like that . '' No clients are seen crying , upset or injured on the videos , he said , but no workers are seen stopping the fighting . `` The fighting entails pushing , wrestling and some shoving , '' Wilson said . Police do not believe anyone was seriously injured , he said , but the investigation is ongoing . `` Four or five clients have been identified and at least five workers , possibly as many as 10 , '' he said . `` Some are more active in staging the fights , and some others passively stand around not doing anything . '' The clients are all adult males , ranging in age from their late teens into their 30s , he said . As part of the investigation , the Inspector General 's office has interviewed some of the clients , Wilson said . Asked whether the school had previously been investigated for abuse , he said , `` This is the exception . Over the years , we have had isolated instances of abuse we have investigated . Every once in a while , the school itself would report a case , but this appears to be organized . '' Police believe , based on the videos , the `` fight club '' was confined to one dormitory , he said . CNN 's John Murgatroyd contributed to this report .
Cell phone videos of alleged abuse at Corpus Christi State School given to police . The Texas school serves adults who are severely mentally handicapped . Seven school employees placed on leave ; arrest warrants are pending . No clients are seen crying , upset or injured on the videos , police say .