There’s a new beef that’s threatening to rip MOBB DEEP apart.  HAVOC has admitted to questioning PRODIGY’S sexuality according to MTV . . . and he says the group is, quote, “on hiatus, indefinitely . . . until things get hashed out.”

Back in April, Havoc accused Prodigy of having homosexual relations in prison on Twitter.  But he later claimed that his account was hacked and he didn’t write those Tweets.  Now, says he DID write them.

Havoc tells AllHipHop.com, quote, “The tweets is crazy . . . and I was speaking of a standpoint of being mad, but still being truthful of how I felt . . . but it was just the wrong thing to do at that time.”

He had tweeted, “I got N*gg*s in the jail system to back up that Prodigy was [effing] homes in jail.  Now I will silence . . . and let the jails take care of the rest.”

Before this Mobb Deep was working on their first album since 2006′s “Blood Money.” There’s been no response from Prodigy.