Off-duty Chicago cop 'shoots dead his 23-year-old son at home after an argument'
Rafael Simon Flores, 23, was killed just before 2am at a home in the Garfield Ridge neighborhood of Chicago on the city's southwest side
An autopsy revealed that Flores died from multiple gunshot wounds according to the Cook County medical examiner's office said
Flores was the coach of a local football team his death has been ruled a homicide