A second person has died as a result of a Saturday night shooting in Waterloo. Police says two men were shot outside a Waterloo home Saturday night. One of the men, 28-year-old Calvin Rash of Chicago, died that night at a Waterloo hospital. The other man, 20-year-old Martavius Robinson of Waterloo, was taken to the hospital and died Tuesday. An autopsy is scheduled for today in Des Moines. Police say they’re investigating the shooting as a homicide, but no charges have been filed. Police are releasing no details.