Drive-by shootings dramatically increased at the height of inter-gang conflict between the Tribesmen and Killer Beez last year.
A report - from the inter-governmental Gang Intelligence Centre - also found gang members got the wrong address in "multiple instances" - putting civilians in the firing line.
An expert says it's a "dangerous development" reflecting a break from the unwritten rule that private homes and workplaces are off-limits.
Political reporter Anneke Smith has more.
