Twisted Karmelo Anthony supporters are bombarding the family of slain high school football player Austin Metcalf with sickening death threats, including a disgusting message saying Austin’s twin brother, Hunter, should have also been killed.

The hateful messages started after Anthony’s arrest last April, but went into overdrive after he was convicted of Metcalf’s murder and sentenced to 35 years in prison Tuesday — with some of the heinous abuse even sent to their personal phones, according to TMZ.

“Your [sic] just mad bc Austin is no longer living. Should’ve stabbed hunter too … he f–ked around and found out,” one of the messages read.

The unhinged supporters have also threatened to show up at the homes of Metcalf family members, even saying they were desecrating Austin’s grave, according to the outlet.

Anthony is awaiting transfer to state prison to begin his sentence.

He could be out in as little as 17 years.