LMPD's Homicide Unit is investigating, but have no suspects and have made no arrests.
Police said in an update Thursday "all parties to this incident are now accounted for."
The juvenile was taken to UofL Hospital where he died.
Community leaders attribute the downward trend to increased police presence and neighborhood outreach efforts.
Officer Michael Wehdah, 44, was found shot to death in the 2700 block of Cedar Street in the city's Russell neighborhood Sunday morning.
LMPD arrested 20-year-old Damari Walls-Medlock on Thursday.
William Harris attended Wednesday's meeting to find out what the city is doing to be proactive.
Mitchell said both were transported to University Hospital, but died of their injuries.
There are no suspects at this time.
Police said Taylor was home alone with the child, and the injuries could only be attributed to blunt force trauma.