Fears of all-out bikie war between rival gangs after drive-by shooting at Finks ...

Underworld figures fear an all-out bikie war is about to erupt after the Finks boss's home was targeted in a drive-by shooting while his wife and 11-day-old baby slept inside.

Brent James (BJ) Reker's home in Frankston, in Melbourne's south-east, was sprayed with bullets and a car firebombed about 4.40am Thursday.

At least one shooter is on the run following the suspected bikie-related attack.

Finks boss BJ Reker, his wife and their 11-day-old son live in the property and were home at the time

Finks boss BJ Reker, his wife and their 11-day-old son live in the property and were home at the time

Underworld sources have now warned the shooting could provoke violent retribution from the Finks gang or associates.

They revealed the Thursday morning shooting was not the first time the Finks boss was targeted in recent weeks. 

Reker was reportedly approached by about 20 bikies from a rival gang at the Frankston hotel in May, causing a brawl to spill out on to the street, the Herald Sun reported. 

Police fearing tensions were escalating then went to the hospital where Reker's son was born and took him back to the station for questioning.

Police now investigating the drive-by shooting are looking at several avenues but rival bikie gang the Hells Angels are at the top of their list.

At least one gunman is on the run after a Melbourne home was shot up as a one-week-old baby and three adults slept inside in a suspected bikie-related attack

At least one gunman is on the run after a Melbourne home was shot up as a one-week-old baby and three adults slept inside in a suspected bikie-related attack

The terrifying drive-by shooting unfolded in Frankston in the city's south-east at on Thursday morning

Witnesses told Daily Mail Australia the house was 'shot up and firebombed' at 4.40am

The terrifying drive-by shooting unfolded in Frankston in the city's south-east at on Thursday morning

Reker has reportedly been behind the re-establishment of the Finks gang after it was torn apart by Victoria Police.

He was brought in to re-build the club after a series of raids weakened the gang in 2015.

Speaking to Daily Mail Australia this year, Reker said the gang was cleaned up and 'The Finks have returned to Victoria'.    

'Bullets went through the targeted house as well as the next door neighbours house,' the witness who doesn't want to be named said

'Bullets went through the targeted house as well as the next door neighbours house,' the witness who doesn't want to be named said

Witnesses of Thursday morning's drive-by shooting in Frankston told Daily Mail Australia the house was 'shot up and firebombed'.

'Bullets went through the targeted house as well as the next door neighbour's house,' the witness who doesn't want to be named said.

'There were cars blowing up out the front as well.' 

The front room, where the bikie's baby sleeps, was targeted by the shooter who aimed at 'head height', according to the witnesses. 

They claimed the attack was 'attempted murder'.

Police found a bullet hole through a window of the home, while a vehicle outside had been set on fire

Police found a bullet hole through a

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