In the late afternoon of a Monday in November 2017, a dispute between neighbors in a Tolleson, Arizona community escalated into a fatal encounter. Steven Arvallo, a 45-year-old male investigator for the Arizona Department of Corrections, was shot and killed outside his home near 99th Avenue and Broadway Road on November 27th. The man identified by the Phoenix Police Department as the suspect was his neighbor, 36-year-old Sladjan Petkovic. The two men were engaged in a verbal altercation that end
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