In 2011, the 27-year-old was discovered dead on her honeymoon in Mauritius.
Her assailant was never apprehended.
The heinous video showed a group of people singing about her death.
According to Sky News, John Bell and Andrew McDade expressed “deep shame and regret” for their roles in broadcasting and singing about her murder.
They called it a “offensive, vile, and completely abhorrent chant.”
This Facebook live video was not streamed with the intent of broadcasting any offensive chants, but rather to broadcast from the room.
The relevant chants, however, should never have been sung in public or private, whether broadcast or not.
We sincerely apologise to the Harte and McAreavey families, as well as wider society, for our actions, which, while fueled by alcohol, cannot be mitigated or excused in any way.”
Our apologies are unequivocal, and we accept full responsibility for our actions.”
The Orange Order called the recording “utterly abhorrent” and condemned it “without reservation” in a statement.
The Northern Ireland Police Service said it was made aware of the video and is investigating whether a crime was committed.
It drew condemnation from all political parties in Northern Ireland, with Brandon Lewis MP calling the video “reprehensible” and urging anyone with information to contact police.