Joe Jackson, 89, passed away early Wednesday morning in Las Vegas, TMZ reports. The Jackson family patriarch was suffering from terminal pancreatic cancer, and had been in failing health in recent months.

His relatives knew he didn't have much time left, so they had been visiting him in the hospital these past few weeks. Wife of 60 years Katherine had been holding vigil at his bedside, and many of his children and grandchildren came to say their last goodbyes.

Joe was notoriously strict with his children, and is credited for making his sons The Jackson 5 one of the most successful groups in history. His death comes just two days after the nine year anniversary of son Michael's tragic passing.

Daughter Janet recently paid tribute to her father while accepting the Radio Disney Music Awards first-ever Impact Award.

"My mother nourished me with the most extravagant love imaginable. My father, my incredible father drove me to be the best I can. My siblings set an incredibly high standard, a high bar for artistic excellence," she said in her speech.

He leaves behind a pretty incredible legacy. RIP.