( CNN ) The accidental death of a 2-year-old boy in Milwaukee on Sunday triggered a violent chain of events , eventually claiming the lives of three more people . It all started with a birthday party that little Damani Terry was attending . During the family gathering , he dashed out into the street and was struck and killed by a GMC van , according to Milwaukee police . The distraught driver , Archie Brown Jr. , 40 , immediately stopped and got out to tend to the boy . But it was too late , police said . Damani was dead . Damani 's alarmed family came running , including his older brother , 15-year-old Rasheed Chiles , police said . That was not the end of the situation . Soon , two more people would also die : the driver and the teen were both felled by bullets fired by the same man , police said . That man , identified as Ricky Ricardo Chiles III , was located late Wednesday at a Chicago-area hotel . He committed suicide as authorities closed in with a warrant for his arrest , Milwaukee Police Chief Ed Flynn told reporters . `` Chicago police and United States Marshals Service entered the hotel room , whereupon Mr. Chiles took his own life with his firearm , '' the police chief said Thursday . An accidental death , a fatal retaliation rips apart two families . Damani 's family members had previously identified the shooting suspect as the boys ' uncle . `` Sunday was the worst day I ever lived in my whole entire life , '' Lena Tidwell , told CNN affiliate WISN . `` It 's a day I wish had never , never came . '' Tidwell is the boys ' grandmother and the mother of the alleged gunman . She said she was inside eating cake and ice cream at the birthday when her life turned upside down . `` I did n't know my grandbaby got hit , and then I heard people just screaming , '' she said . `` Then I just heard gunshots , and my daughter ran in the house with the baby in her arms . '' The family believes the uncle targeted Brown , and Rasheed was struck by an errant bullet . `` I heard he was trying to pick his brother up . He was trying to hold him and save him , '' a family friend , Stephanie Townsend , told CNN affiliate WITI . Earlier this week , Flynn bemoaned the apparent madness of what happened . `` What did we have Sunday ? '' Flynn asked . `` We had some clown take the law into his own hands and murder a guy who was doing what we expect good citizens to do , and oops , accidentally kill somebody else . ''
Archie Brown Jr. was suspected in the shooting deaths of two people . Police say the chain of events started Sunday when a 2-year-old dashed out in front a vehicle and was killed . The driver of the vehicle and the boy 's older brother died from gunshots .