The Cook County State's Attorney's office said Friday that no criminal charges will come against Chicago, Illinois police officer Robert Rialmo, who fatally shot 19-year-old Quintonio LeGrier and mistakenly Bettie Jones, who was a grandmother standing by LeGrier during a fatal incident in 2015.

Arguing that Quintonio LeGrier, 19, was unarmed when Chicago police shot and killed him over the weekend, his father on Monday filed a wrongful-death lawsuit against the city, reports DNAinfo Chicago.