FORMER Mötley Crüe drummer Tommy Lee was reportedly attacked on Monday night by his adult son, Brandon, who allegedly punched him in the face in his home during a drunken brawl, according to reports.

"My fiancee and I were in bed when my son busted into the room and assaulted me," Lee tweeted. "I asked him to leave the house and he knocked me unconscious. He ran away from the police. THAT'S the truth."

According to the New York Post, Lee, 55, also posted a photo of his bloodied, swollen lip, but later deleted the shot.

The wound was reportedly the handiwork of Brandon Lee, the rocker's son with Pamela Anderson.

A family source told TMZ that Brandon has been living with his dad part-time to help him overcome his issues with alcohol.

Sources close to the family say that 21-year-old Brandon was sticking up for his former Baywatch star mother.

On Monday, the 55-year-old criticised his former wife on Twitter, days after she brought up his 1998 arrest for spousal battery during an interview with Piers Morgan.

"Think she'd find something new to discuss instead of rehashing old s**t but I guess she has nothing else going on & needs attention," he tweeted. "Signed, 'The abuser' (who she texts everyday & asks for me back)".

Morgan responded to Lee's tweet, saying "Morning Tommy! Lovely to hear from you, I'm not responsible for what Pamela told me about your marriage so I suggest you take it up with her ..."

Lee was quick to respond to the tweet.

"I suggest you don't interview her. Are you that desperate for people to interview? She literally has NOTHING going on so she brings up old drama for attention. I'm sure there's some people better worth your time. Lovely to hear from you too ha."

Sources close to the 21-year-old told TMZ that the notoriously hard-living drummer was drunk, and Brandon swung in self defence Monday night inside the family's Los Angeles home.

Lee denied that account.

The elder Lee briefly went to a hospital. The police also came to the home, but no one was immediately arrested.

"My heart is broken. You can give your kids everything they could ever want in their entire lives and they can still turn against you," Lee captioned the deleted photo.

During a weekend appearance on Morgan's morning show, Anderson recalled Lee's 1998 arrest for spousal battery, for which he pleaded no contest and spent six months in prison.

This story was originally published in the New York Post and is reprinted with permission.