( CNN ) -- Three Delaware day care workers were arrested after police got hold of a `` disturbing '' and `` shocking '' cell phone video that , authorities say , shows two toddlers taking part in a fight the workers had organized . Police said Tuesday that they arrested Tiana Harris , 19 ; Estefania Myers , 21 ; and Lisa Parker , 47 , who have been charged with assault , reckless endangerment , endangering the welfare of a child and conspiracy . On Saturday , authorities responded to an unrelated incident and a person whom police would not identify showed them video of the 3-year-old boys fighting in March . The toddlers were not seriously injured , but they were `` clearly hurting each other , '' said Dover Police Capt . Tim Stump . Authorities have not released the video but say one day care worker said `` No pinching , only punching '' after one of the boys complained that the other had pinched him . The video purportedly shows seven other children seated in the room with their backs to the fighting , according to police . `` It 's not like they did n't know what was going on , and they were just encouraging them to continue , '' Stump said . `` One of the children attempted to run , but one of the teachers pushes him back into the fray . `` We are looking into the possibility that this was not the first time it happened , but it appears to be isolated , and it seems the administration was in the dark about this , '' he added . Police made the arrests Monday and addressed the incident that evening with parents and guardians of the children who attended the day care center . A spokesman for the state Division of Family Services said the agency dispatched an institutional abuse investigator to work with Dover police during their investigation . `` Depending on our findings , these women could be prohibited from working in the public sector , especially with children or senior citizens , '' agency spokesman Joseph Smack said , adding that all three women had passed background checks before their employment at the center . `` It 's rare to see a case like this where the staff encouraged this type of behavior , '' Smack said . Calls to the day care center were not returned , though police say the company 's business license has been suspended . The three suspects and their attorneys could not be immediately reached for comment . Police said the women have posted $ 10,000 bail and are awaiting trial . More from CNN Justice . U.S. Open tennis ref charged with killing husband . More body parts found in Toronto area . Woman held captive in basement sues city . Medical examiner rules death of handcuffed suspect a suicide .
Police arrested Tiana Harris , 19 , Estefania Myers , 21 , and Lisa Parker , 47 . They were charged with felony possession of a controlled substance in the first degree. The women and the day care center could not be immediately reached for comment .