The Los Angeles Police Department’s Internal Affairs Group is launching a preliminary probe after a man’s voice was caught on video ridiculing Michael Brown’s death while singing a tune at a private dinner last week reportedly organized by a retired LAPD detective at the Elks Lodge in Glendale.

In the video, obtained by TMZ and published on its site Tuesday, a man identified as Elks Lodge member Gary Fishell reportedly sang the offensive lyrics that seemed to celebrate Brown’s death at the Dec. 15 dinner that followed a charity golf tournament.

Brown, an unarmed black teen who was suspected of stealing cigars at a store, was shot by then-Ferguson, Missouri, police Officer Darren Wilson, who is white, after an August confrontation in an incident that triggered angry but mostly peaceful protests around the country.

The dinner, the culmination of an annual charity golf event The Christmas Classic, was organized by retired LAPD detective and Elks Lodge member Joe Myers and was likely attended by dozens of mostly retired cops and civilians, according to Jerry Stephens, chairman of the board of trustees for the Glendale Elks Lodge #1289. It was a private rather than a lodge event, he said.

LAPD spokeswoman Meghan Aguilar said a man named Joe Myers did retire from LAPD in May 2007.

“At this time, there has not been a nexus between the function that Joe Myers was facilitating that evening and LAPD,” Aguilar said. “That being said, our Internal Affairs Group is doing a preliminary investigation to verify that there is no nexus to current LAPD personnel and the events that occurred that evening.”

If there is, then a full-blown investigation into any possible misconduct will be launched, she said. Retired employees do not have to cooperate in the investigation, though they may choose to do so, she said.

“They’ll be looking for any current employees that may have witnessed or been a part of misconduct,” Aguilar said. “It’s a broad spectrum — anything that the department would say is conduct unbecoming of a police officer.”

Officials with the Glendale Oaks Lodge said in a statement that the incident, although it occurred at a private event, is currently under investigation by lodge officers and that “immediate action will be taken against those responsible.” They also said they “sincerely apologize.”

“It’s completely an inappropriate parody to be played in this lodge or any lodge,” Stephens said from the Elks Lodge. “(The singer Fishell) does things that are out of the norm. It’s just offensive. The words he used, the parody he used is not appropriate. Period.”

The song was performed to the tune of the 1973 Jim Croce song “Bad, Bad Leroy Brown” and included the following:

“Michael Brown learned a lesson about a messin’

With a badass policeman

And he’s bad, bad Michael Brown

Baddest thug in the whole damn town

Badder than old King Kong

Meaner than a junkyard dog

“Two men took to fightin’

And Michael punched in through the door

And Michael looked like some old Swiss cheese

His brain was splattered on the floor

“And he’s dead, dead Michael Brown

Deadest man in the whole damn town

His whole life’s long gone

Deader than a roadkill dog.”

Stephens said he spoke to the Fishell about the incident “and he feels very badly about it and apologized.”

Myers told Stephens after the incident that he was unaware Fishell was going to play that song and couldn’t hear it amid all the noise that evening, Stephens said.

Neither Fishell nor Myers could be reached by the Daily News on Tuesday.