Angry Anderson mourns son's tragic death

Angry Anderson has denied his son Liam was best friends with his accused killer Mathew Flame.

"They were not best friends," the devastated Rose Tattoo lead singer told The Daily Telegraph on Thursday.

"He wasn't even in Liam's main group of friends."

Flame, 20, is alleged to have punched and stomped Liam Anderson, 26, to death in northern Sydney early on Sunday while under the influence of MDMA, marijuana and alcohol.

He has been charged with murder and is in custody and will next face court on January 29.

Flame had been described in initial media reports as Liam Anderson's best friend.