On May 12, 2017, police were looking for a suspect when Guyger was one of two officers called to assist another officer. Suspect Uvaldo Perez got out of a car and became combative with Guyger and another officer, according to an affidavit filed in the case against Perez. A struggle began and Guyger fired her Taser at Perez, who then wrested away her Taser. Guyger pulled out her gun and fired, wounding Perez in the abdomen.