Z. J. v. Kansas City Board of Police Commissioners, No. 17-3365 (8th Cir. 2019)
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Plaintiff, a minor, filed suit against the SWAT team officers, the detectives, and the Board under 42 U.S.C. 1983, after she suffered Post-Traumatic Stress Disorder (PTSD) from the blast of a flash-bang grenade. In this case, even though the SWAT team knew the suspect was already in custody, they broke open the screen door of the suspect's residence and threw a flash-bang grenade into the living room of the home before a young woman could open the door with the keys she was holding in her hand. The only people inside where three women and a two year old girl. The girl suffered PTSD from the officers' use of the flash-bang grenade.
The Eighth Circuit held that the SWAT team officers were not entitled to qualified immunity because any reasonable officer would have known the use a flash-bang grenade under these circumstances constituted excessive force. It was clearly established at the time that use of a flash-bang grenade was unreasonable where officers have no basis to believe they will face a threat of violence and they unreasonably fail to ascertain whether there are any innocent bystanders in the area where the grenade is deployed. Therefore, the district court did not err by denying summary judgment based on qualified immunity. The court also held that detectives are entitled to summary judgment because there was probable cause to support the search warrant, even considering the omitted information, and because their decision to use a SWAT team, regardless of whether it was reasonable, did not violate clearly established law. Accordingly, the court reversed the district court's grant of summary judgment as to the detectives. Finally, the court held that it lacked appellate jurisdiction to review the district court's denial of summary judgment to the Board, and the court dismissed the appeal as to the Board.