Riot squad police are scouring a Sydney street where police found a torched car believed to be linked to the shooting execution of notorious former bikie boss Mahmoud "Mick" Hawi.
A manhunt continued on Friday following the 37-year-old's brazen execution outside a Fitness First gym in Rockdale, in Sydney's south, around midday Thursday.
The former leader of the Comancheros died in St George Hospital after he was shot multiple times and police are wary of underworld revenge attacks.
Hawi's luxury black 4WD was peppered with at least six bullets in a daylight hit described as "serious, brutal and callous".
Shortly afterwards, a Mercedes Benz station wagon was set alight on a nearby street.
Members of the public order riot squad conducted line searches of Chandler Street in Kogarah on Friday morning.
Two men in dark clothing were captured on CCTV fleeing the scene after the attack. Witnesses identified a man wearing a balaclava as the gunman.
"This was a planned and targeted attack," Assistant Commissioner Mal Lanyon told reporters on Thursday.
He said detectives were investigating Hawi's underworld links and who may have wanted him dead, while full resources were also being deployed to prevent retribution for the murder.
"It's essential, when we believe there could be links to organised crime, that we take action to prevent that," Mr Lanyon said.
Hawi served time in prison for his role in the killing of Hells Angels associate Anthony Zervas, who was bashed with a bollard during a brawl between the rival clubs at Sydney Airport in 2009.
Hawi reportedly had a bounty on his head and there may have been bad blood between he and current Comanchero leader Mark Buddle.
The Rockdale gym will remain closed until Monday, Fitness First said on Friday.
