STOCKTON — Four people were shot, one fatally, in the 600 block of East Oak Street at about 9:15 p.m. Sunday night, Stockton police reported.Stockton police arrived at the scene, where medics pronounced one person dead, while others were transported to area hospitals for treatment.The incident remains under investigation. The deadly shooting was the second homicide Sunday night; the first occurred at about 7:30 p.m.