Tommy Lee's Fight With Son Brandon Stemmed From Tweets About Pam Anderson

The alleged physical altercation that took place between Tommy Lee  and his 21-year-old son Brandon on Monday stemmed from the rocker’s  controversial tweets about his former wife — and Brandon’s mother —  Pamela Anderson.

Los Angeles County Sheriff Department officers responded to an  incident at Lee’s home in Calabasas, California, on Monday night, an  apparent scuffle between father and son that left the Mötley  Crüe drummer, 55, with a bloody lip. He was transported to a local  hospital later that night.

Brandon, who was not at the scene when authorities arrived, has been  named a person of interest in the ongoing investigation for criminal  battery. So far no arrest has been made, and authorities say his  attorneys are cooperating fully.

An LASD official tells PEOPLE that in the lead-up to the alleged  tussle, the pair had been arguing about a series of tweets Lee had  posted responding to Anderson’s interview on Piers Morgan’s Life Stories that aired Saturday night on ITV. During the broadcast, the former Baywatch star, 50, discussed physical abuse she claimed to have endured from Lee during their relationship.

In 1998 Lee was sentenced to six months in the Los Angeles County Jail for spousal battery following  an assault that left Anderson with bruises and a torn fingernail. She  was reportedly holding their infant son, Dylan (now 20) at the time. Lee  pled no contest to the charges.

“Think she’d find something new to discuss instead of  rehashing old s— but I guess she has nothing else going on & needs  attention Signed, ‘The abuser’ (who she texts every day & asks for  me back),” he tweeted, referring to Anderson.

911 audio below: