La Toya Jackson dealt Omarosa a very low blow on last night's episode of "Celebrity Apprentice" -- blaming her for causing the death of her late fiance, Michael Clarke Duncan.

The war of words between the two strong personalities continued on Sunday night, as they tried to work together on a soap opera pitch for Crystal Light.

Clearly, the two won't be hanging out anytime soon, as La Toya was seen telling the camera "Omarosa's fiance passed away not long ago. He had a heart attack, I'm sure she gave it to him."

Ouch, right?

But she wasn't done there. After getting eliminated from the show, Jackson continued her tear against Omarosa ... and once again brought up her dead fiance.

"Omarosa is the most evil person I have ever met," she said. "She's a no good, conniving scheming, cut-throat, probably pulled the cord on Michael Duncan Clarke [sic]."

After watching the episode, Omarosa tweeted her reaction to La Toya's outburst -- writing "I am saddened by her remarks!! Truly!!"

Do you think La Toya crossed the line? Sound off below!