This is reported by Fox News with reference to the state police.
The shooting occurred on June 30 at around 18:20 UTC in the 200 block of Clinton Place.
All the victims were taken to medical facilities: four were hospitalized at the Newark Beth Israel Medical Center, four more at the University Hospital.
The details of the incident are being investigated.
On June 26, it was reported that eight people were injured as a result of shooting in the American city of Tacoma (Washington).