Is there trouble brewing on the co-headlining Rob Zombie and Marilyn Manson Twins of Evil tour only nine shows in? According to sources at the show last night (Oct. 12) at the DTE Energy Music Theater in Clarkston, Mich., the two rockers took up valuable time during their sets to publicly hurl verbal assaults at each other in front of their paying fans.

According to Mlive.com, the animosity stemmed from Manson feeling his set was cut short by Zombie on the tour. “I’m going to kick his ass,” Manson reportedly said towards the end of his set after telling the crowd that he wished he had time to play more songs.

Manson also seemingly referenced this issue on his Twitter account after the Oct. 11 Chicago show, saying, “Sorry to Chicago for not getting to play ‘Beautiful People.'" You can sing it in between Zombie songs, his band has already played it,” possibly alluding to the fact that his former bandmates Ginger Fish and John 5 now play with Zombie.

Marilyn Manson then posted a video on Twitter later that night of he and guitarist Twiggy Ramirez performing 'Beautiful People' at their after-party in Chicago; fans can check it out here.

Back to the show in Michigan, Zombie took the stage after Manson with his own message for his co-headlining 'friend,' saying, “Some tours just don't f---ing go together.” According to those in attendance, he also told the crowd Manson didn't even attempt to "kick his ass" during intermission.

But it didn’t stop there, Zombie allegedly interlaced his cover of the Alice Cooper classic ‘School’s Out’ with some harsh words for Manson yelling out choice phrases like “Suck it Marilyn Manson” and “F--- You Marilyn Manson” throughout. He also called Manson 'Brian' a few times, referring to his birth name Brian Warner. Video footage of the song can be seen below.

Rob Zombie took to his Facebook page today (Oct.13) to comment on the drama:

Just to clear up the rumors flying around. Neither I nor anyone working for me made Manson cut his show short. It is a co-headliner and we both play the exact same set length every night. It is all very simple, but if one of us chooses to go on late for whatever reason that time will have to come out of their set. That just the way it works, that is the way it always works. There is no evil plan going on. It is all complete nonsense.

Shortly after that post, he followed it up with a more detailed account:

As stupid as this all is, I feel I must clear things up a little better. First off, I want to thank all the fans who came out in the freezing cold in Detroit last night. It was a total blast as always. Unfortunately things turned ugly backstage. Why? I don't know, but for some reason our touring partner decided to end his set by blaming me for something that I had nothing to do with and screaming he was going to "kick Rob Zombie's ass as soon as he got off stage". Go figure. I was backstage hanging, watching the show thinking "hey this is gonna be a great night", when suddenly he starts screaming threats. So strange. I don't get it. Christ, I've known some of his crew for 20 f---ing years and some of his crew used work for me. It's all good. No one would f--- with someone's show. It is ridiculous.Well, of course I felt the need to respond to the " kick my ass remark". Who wouldn't? Although I wish I had kept it backstage and kept the fans out of it. It is all 4rd grade fight after school nonsense of which I have never dealt with on tour before. Co-headlining tours always go smooth because everything is cut 50/50 and I mean everything. No one f---s with anyone's show. It is even f---ing Steven.I've done it co-headlining tours many times before and have had no troubles. Not with Pantera, Slayer, Alice Cooper, Korn, Megadeth or anyone ever. So I didn't expect any troubles on this. It seemed like a great idea at the time.But sh-- happens. Anyway, sorry to the fans who had to dealt with the embarrassing stupidity of it all. We are all there for the same reasons to give you the best show ever… that's it.

With 27 shows left on the tour, this could get interesting. Stay tuned for any updates.