Grieving rock icon Gary “Angry” Anderson has released a video in which he chokes back tears while thanking supporters for the love and sympathy that helped his family get through the months after his son was allegedly beaten to death by a friend in Sydney’s north.

Liam Anderson, 26, was found with fatal head injuries on a road in Queenscliff in November.

Matthew Flame, then 20, was arrested and charged with murdering Liam while under the influence of a cocktail of drugs and alcohol.

As news of his son’s death broke, Anderson cut short a tour with his band Rose Tattoo to fly home and be with his family.

The Andersons pleaded for privacy at the time, speaking about the issue only sparingly until Anderson’s official Facebook account shared a video on Saturday afternoon.

In the video, simply entitled “Thank you”, Anderson describes the period following Liam’s death as his family’s “darkest hour”.

Struggling at times to be heard above the cicadas in the garden of his Northern Beaches home, he thanked the thousands of fans from around Australia and the world who penned messages of support.

“Each and every one of those messages I read and my children read. Each and every one of those messages meant so much to us,” he says, adding that the sympathy and support helped his family in their struggle to adjust to a “new life” after Liam’s death.

Liam Anderson and dad Angry shared this Facebook photo with fans not long before the 26-year-old’s death. Photo: Facebook

Mr Anderson’s only previous comments on Liam’s death came within days of the tragedy, when he told The Daily Telegraph that reports of Liam being “best friends” with his accused killer were totally inaccurate.

“If he was Liam’s best friend, I would have known him,” he said. “He would have been here, around this table, eating with us and the others.”

He had brought up his son to “always do the right thing” and “look after ­people”, he said.

“That’s what Liam was doing on Sunday morning. Liam was trying to help him.

“He was such a decent human being.”

A GoFundMe, launched by family friend Greg Van Borssum in the days following Liam’s death, has collected more than $12,400 for the Anderson family.

“Rest In Peace little man – we will be helping and looking out for your family during this devastating time,” Mr Van Borssum wrote online.

Flame remains in custody and is expected to face court on January 29.

-with AAP