Iggy Azalea has been threatened by hackers Credit: Larry Marano/Getty Images

Iggy Azalea is being threatened by a branch of the Anonymous hacker group who say they'll release an alleged sex tape of the hip hop star if she doesn't apologize to Azealia Banks.

Azalea, who denies the existence of any such tape, has been locked in a bitter online battle with Banks since the start of the month. There's been bad blood between the pair for the past two years but on Wednesday, Dec. 3, Banks started the latest feud by criticizing Azalea for not caring about black issues, in the wake of the grand jury decision not to indict the NYPD officer involved in the death of Eric Garner.

The pair have been battling to and fro ever since, with their most recent exchanges being on Friday, Dec. 19.

"Special msg for banks:" the Australian wrote. "There are many black artists succeeding in all genres. The reason you haven't is because of your piss poor attitude. Your inability to be responsible for your own mistakes, bullying others, the inability to be humble or self control. It's YOU!"

While Banks herself fired back at Azalea, an anonymous Twitter handle took the "212" singer's side with some sinister threats later on Friday night.

"@IGGYAZALEA, you have exactly 48 hours from now to release a statement apologizing to @AzealiaBanks and the protesters in NYC..." one of the threatening tweets from the @TheAnonMessage read. "You are guilty of misappropriating black culture, insulting peaceful protesters, and making light of Eric Garner's death...There's an X rated tape of you, we bet you'd certainly don't want public, are we right? @IGGYAZALEA....and this is nothing. Comply or else."

Shortly after the threats, the account was suspended by Twitter, but another message was subsequently posted from an Anonymous backup account.

"It's okay everyone, we'll be back. We just have some stuff to take care of," the message read.

For her part, Azalea has always denied the existence of any such sex tape. The singer has not mentioned her feud with Banks via Twitter since the threats were made.