Mobb Deep used to rap, "We're in this together, son, your beef is mines," but now there appears to be an internal battle between Havoc and Prodigy.

Early Monday morning (April 9), Hav took to Twitter and sarcastically congratulated Prodigy and Rihanna on their engagement, then made serious allegations about his rhyme partner's sexuality. It's all very strange, but sources close to Havoc confirmed with MTV News that this is no hack.

Things started to spin out of control at around 3 a.m. ET when Hav tweeted: "congrats to P @prodigymobbdeep and @rihanna for getting married soon!! @rihanna please confirm!"

There was no confirmation from the Talk That Talk singer, but that didn't stop the Grammy Award-winning producer from continuing his rant. "Prodigy abitch and I'm gonna show it, follow!! Ground breaking new," Hav wrote soon after.

Things got even more scathing when Havoc charged that his childhood friend was involved in a homosexual relationship during his three-year jail bid. "I got n---as in the jail system to to back up that prodigy was f---ing homes in jail," he wrote. "Now i will silence... and let the jails take care of the rest."

But Havoc didn't "silence," instead the temperature continued to rise as Hav posted tweets throughout the morning saying he "had to smack P" and went on to threaten Prodigy. "Next time I see u, u getting layer out, con camera."

Mobb Deep released their debut album, Juvenile Hell, in 1993 and have gone on to drop seven LPs together. Throughout their career, Mobb Deep have stood as one of the pillars of New York's street hip-hop scene. During an October 2011 episode of "RapFix Live," both Havoc and Prodigy appeared on the show and talked about their legacy as a group.

"We been through a lot of eras in hip-hop music, and every album we have the attitude like it's our first album," Prodigy said. The group planned to release their self-titled eighth LP later this year, but now the future of the duo seems to be in question.

There's still no word as to what caused the rift, but Havoc is clearly no shook one as he went on fearlessly sending out barbs. He even challenged Prodigy to a fistfight: "LET'S DO A ONE ON ONE!!!!! ME AND P!!! HE SO BUTTTT HE WILL AVOID!!!!"

The barrage continued through the a.m. and ended with Havoc tweeting, "Good morning gay P!"

Prodigy has yet to respond via Twitter and a rep for the rapper had not responded to MTV News' request for comment at press time.

What do you think of Mobb Deep's internal drama? Tell us in the comments!