PICTURED: Young men, 19 and 20, charged with murdering a respected doctor

Two teenagers and a young man accused of murdering a Brisbane doctor with a sawn-off shotgun at his home have fronted a Queensland court.

Joshua Hamilton, 19, Billy Smith, 20, and a 17-year-old boy, who cannot be named for legal reasons, were not required to appear in the Brisbane Magistrate's Court on Saturday.

The trio are charged with the late-night shooting murder of Luping Zeng, 56, at his MacGregor home during a botched robbery attempt on Monday night.

Two teenagers and a young man accused of murdering a Brisbane doctor at his home have fronted a Queensland court  

Skin cancer doctor Luping Zeng, 56, was shot and killed while packing his car in the affluent south-side suburb of MacGregor, in Brisbane, shortly before midnight on Monday

Skin cancer doctor Luping Zeng, 56, was shot and killed while packing his car in the affluent south-side suburb of MacGregor, in Brisbane, shortly before midnight on Monday

The skin cancer doctor was shot and killed while packing his car in the affluent south-side suburb of MacGregor, in Brisbane, shortly before midnight on Monday. 

Bail was not applied for and all three were remanded in custody.

Hamilton and Smith will reappear in the same court on April 23 and June 3, respectively.

The boy will appear in the Children's Court on June 10.

They have also been charged with entering a dwelling with intent, attempted robbery with violence, possession of shortened firearms and unlawful use of a motor vehicle.

Police believe the trio didn't know Dr Zeng and robbery was likely to be the motive behind his killing.

Dr Zeng was allegedly shot once in the chest while his wife and two adult daughters were inside the home. 

He was taken in a critical condition to Princess Alexandra Hospital where he died.

Dr

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