**Update** Trevor Braymiller has been found and is in custody. However, it has been determined that he did not shoot Dwayne Kerrigan. It appears, sadly, that Dwayne was playing with the gun and shot himself. Trevor is not being charged with the death of Dwayne (at least that is how I understand it).
Fatal shooting of 4-year-old boy now being treated as homicide
Police: Wash. 4-year-old shot, dies; felon flees
Police search for family member in fatal shooting of 4-year-old boy
Police: Wash. 4-Year-Old Shot, Dies; Felon Flees
Felon on the run after 4-year-old dies of gunshot
4-year-old Washington boy dies of gunshot; police searching for felon
Police arrest Sedro-Woolley man but say he didn’t pull trigger on boy