FIRST ON FOX: New dispatch audio from the day a driver allegedly plowed into children and spectators at a Kansas soccer field reveals the moments first responders rushed to the scene on Saturday.In the call, dispatchers can be heard labeling the horrific incident as an "MCI" or mass-casualty incident. It happened at the Stryker Sports Complex in Wichita.Cole Adrian, 6, and Nicholas Schafer, 35, were killed. Both victims were from McPherson.CHILD AMONG 2 KILLED AFTER VEHICLE DRIVES ONTO SOCCER FIELD AT KANSAS SPORTS COMPLEXIn addition to the deaths, 10 more, including five children, were injured.The 34-year-old woman who was behind the wheel was released with no charges, police said.DRIVER RELEASED WITHOUT CHARGES AFTER PICKUP KILLS BOY, 6, AND MAN ON KANSAS SOCCER FIELDPolice have not revealed if there are going to be any criminal charges forthcoming against the driver, who was initially taken into custody.They said Sunday that the driver was released pending toxicology results and an examination of her Chevrolet pickup.She had two of her children inside the pickup. One of her children was playing soccer on a different field at the complex.Investigators interviewed the driver and more than 30 witnesses, including the two children who were in the pickup at the time of the crash. Police consulted with the Sedgwick County District Attorney's Office before releasing her.FOLLOW THE FOX TRUE CRIME TEAM ON XSIGN UP TO GET THE LATEST TRUE CRIME NEWSA 30-minute log of dispatch communications outlines the response to Saturday's incident:CLICK HERE FOR MORE FROM THE FOX TRUE CRIME HUBWATCH: Two killed, including 6-year-old boy, after truck plows through Kansas youth soccer gameOn Monday, the City of Wichita confirmed its public works division "will be installing temporary barriers at key locations around the Stryker Sports Complex until more permanent solutions can be implemented."SEND US A TIPThe city also confirmed it would assess security around the complex and police would "be present at the facility" this coming weekend – along with local mental health professionals to assist families in the wake of the tragedy.GOT A TIP?McPherson Mayor Jim Loving said in a statement in part:LISTEN TO THE NEW 'CRIME & JUSTICE WITH DONNA ROTUNNO' PODCAST"There is nothing I can say that makes that right. To the families who lost someone: this whole town is grieving with you, and we will stand with you for as long as it takes. To the injured and their families: we are praying for your recovery. Thank you to the bystanders who stepped in before the first ambulance arrived, and to the first responders in Wichita and here at home."GET BREAKING NEWS BY EMAILIn a statement sent to Fox News Digital, Wichita Police said, "This is an active and ongoing investigation, and I would refer you to our media release. When we have any new updates to share, we will provide them."Fox News Digital's Stepheny Price contributed to this report.