Tommy Lee and son Brandon battle in public as the musician accuses his son of assaulting him. Brandon chalks up the incident to Tommy's alcoholism.

According to a report from People, a physical altercation arose between the father and son at the former Mötley Crüe drummer's Los Angeles residence. At the time, Brandon was living with Tommy.

The cops came to the scene, finding Tommy, 55, with a bloody lip from the fight. His injuries were treated at a local hospital.

Tommy Calls Assault

It's Tommy's word against Brandon when it comes to the altercation as the pair had conflicting stories that they relayed to the public.

In a tweet responding to TMZ where a source says Brandon was defending himself, Tommy claims that he and his fiancée, Brittany Furlan, were in bed when his 21-year-old son stormed in and attacked him until he fell unconscious. Brandon, he says, then ran away from the police.

Furlan made the 911 call following the altercation. In the audio obtained by The Blast, the drummer's fiancée told the dispatcher that Tommy is unconscious, knocked out by his son. She added that she locked the doors out of fear because his stepson keeps guns in his own room.

When Tommy came about, Furlan tried to call off the paramedics, but they still arrived on the scene.

Alcoholism To Blame, Says Brandon

In an official statement to People via his representative Teal Cannaday, Brandon says he's devastated that his father's alcoholism ended up in the events of the past few days. He goes on to say that he has been spearheading his father's road to sobriety.

"I've worked tirelessly organizing an intervention and it's incredibly upsetting that it never came to fruition," he explains in the statement. "I wanted my dad's hopeful sobriety and recovery to be a private family matter but, as a result of his accusations on social media, I feel forced to speak out. I have and will continue to cooperate with law enforcement as needed. I love my father and just want to see him sober, happy and healthy."

In response, Tommy once again took to Twitter, calling his son's claims lies.

Tommy is pressing charges against Brandon, who has now been named a person of interest in criminal battery investigations.

Family Matters

The beef between Tommy and Brandon began as an argument over the drummer's tweets following Baywatch star Pamela Anderson's interview with Piers Morgan. In the interview, Anderson talked about the physical abuse she experienced from Tommy.