Northern Territory Police have charged 45-year-old Ben Hoffmann with four counts of murder over this week's deadly shootings in Darwin.
Those killed were Rob Courtney, 52, Hassan Baydoun, 33, Michael Sisois, 57 and Nigel Hellings, 75, at four different locations.
Hoffmann will appear in court via video link on Friday morning charged with murder, recklessly endangering serious harm and criminal damage.