Police are talking to the families and associates of two men shot dead in what they have described as a night of violence in Sydney.
One of the dead men is believed to be Comanchero affiliate Bassil Hijazi, who survived being shot in the neck in Bexley on July 16,reportedly in retribution for the slaying of two rival bikie members earlier in the month.
The 18-year-old was shot several times on Monday night in Bexley and died in hospital.
Social media websites were flooded with tributes to Hijazi on Tuesday.
Muckbil Ali took to Facebook to remember his friend.
"Rest in Peace Brother. I remember those Soccer days together then our high school days at Hurstville Boys. It only feels like yesterday. Your in a better place Bassil."
Rebecca Babyye also wrote on Facebook: "Sill (sic) can't get through my head that he's gone. Keeps going through my head that phone call we had a few days ago ):rip Bassil Hijazi."
Meanwhile a 35-year-old man shot in a separate incident in Earlwood on Monday night died in hospital early on Tuesday morning.
Homicide Squad Commander Detective Superintendent Mick Willing said both victims were known to police although the shootings were not believed to be linked.
"It was a violent night for Sydney, there's no doubt about that," Supt Willing told reporters in Sydney on Tuesday.
"The persons responsible for this crime do not care about the public, they are reckless.
"Somebody out there knows who committed these crimes and we want those people to come forward."
