Mötley Crüe founding member Tommy Lee is being sued by a man who claims to be the original one who invented the roller coaster drum solo stunt, saying that the glam metal rock star stole his idea.

According to reports, Los Angeles-based engineer Scott King filed the lawsuit in Los Angeles County Superior Court against Tommy Lee, claiming he approached the Mötley Crüe drummer back in 1991 with an initial design for a drum-roller coaster for his concerts, but his idea was shot down. Last year, Tommy Lee was seen using the same design for his band’s tour.

Now, Scott King is suing the rock star for stealing his idea, demanding at least $400,000 in damages.

Previous reports have stated that King initially sent Lee a legal letter, promising to file a lawsuit against him if he is not compensated.

The attorney’s of Lee reportedly responded to the letter of Scott King, claiming that the engineer’s allegations are false.

Motley Crue founding member Tommy Lee is being threatened with legal action by an engineer based in Los Angeles who claims that the glam metal star stole the idea behind the upside-down roller coaster drum solo — adding that he pitched in the idea for Lee’s concert stunt back in 1991.

According to reports, a man named Scott King has just sent a legal letter to Motley Crue’s lawyers, claiming that 49-year-old Tommy Lee turned down King’s similar idea 20 years ago, and then jacked the drum-roller coaster stunt for the 2011 tour of the rock band.

Scott King now claims that he did not get any money from Motley Crue, and now he is getting back at them. If the push comes to shove, the engineer claims he will file a lawsuit.

However, the attorneys of Tommy Lee are not buying the story of Scott King. The lawyers of the rock star have fired off their own letter in response, arguing that King never pitched in the idea to Lee, and that even if he did, the roller coaster model of Scott King (which tracked all over the stage) is nothing like the stationary “drum ring” used by Lee at his concerts.

As of the time being, no lawsuit has been filed yet.

Tommy Lee is known to use drum kit stunts during Motley Crue’s shows and during their 2011 tour, he was seen turning upside down as he played the drums.

Mötley Crüe drummer Tommy Lee has ended the legal battle with his former assistant, Michael Sullivan. Reports say Lee shelled out a total amount of $400,000 to Sullivan, who sued the drummer for defamation and failure to pay overtime.

According to Star Magazine reports, the settlement for the lawsuit will also include a public apology to Michael Sullivan, who worked for Tommy Lee as “procurer, Man Friday, chauffeur, guide, bookkeeper, attendant, door-keeper, agent, butler, valet, attendant, cook, shopper, nanny, bodyguard, maid, nurse and nursemaid” from January 2005 to March 2011. The lawsuit claims Sullivan was worked virtually around the clock, and eventually required to live in Lee’s house. Then his pay was deducted $1,000 a month for rent.

Other reports say that Sullivan’s pay was also docked if he was a few minutes late to work, or if Tommy Lee was angry with him. After leaving the Mötley Crüe drummer, Michael Sullivan says he got a job as tour manager for the rock band Bush, but lost that job because of Lee’s “defamatory statements and interference.”

A Radar Online report said that Michael Sullivan had teamed up with Pam Anderson, who was ready to state that Anderson contracted Hepatitis C through a tattoo needle she shared with Tommy Lee.