Joseph "Joe" Jackson, the patriarch who launched the musical Jackson family dynasty, died Wednesday in a Las Vegas hospital, a source close to the family tells CNN.

He was 89.

Jackson was the father and at times manager to pop stars Michael and Janet Jackson, along with the sibling-singing group, The Jackson 5.

No cause of death has been released, but Jackson had reportedly been in ill health.

He formed The Jackson Brothers in 1963 – with sons Tito, Jackie and Jermaine – and began entering them in local talent shows. With the addition of Marlon and Michael, The Jackson 5 was born in 1966. Two years later, they signed with Motown Records.

They went on to become one of the most successful R&B groups in history, with their father initially acting as their manager.

At the height of their stardom, The Jackson 5 sold millions of records and had their own CBS variety show.

“Joseph’s role as manager dwindled however as Motown CEO Berry Gordy began to take more charge on his act, a role that reverted back to Joseph when he began managing the entire family for performances in Las Vegas,” according to Jackson’s official site. “Joseph also helped his sons seal a deal with CBS after leaving Motown.”

The success of The Jackson 5 led to Michael Jackson going solo, becoming such a major star that he was later dubbed the King of Pop. Youngest daughter Janet also became a hugely successful recording artist.

The elder Jackson managed daughters Rebbie, La Toya, and Janet in the early 1980s until they, like their brothers before, struck out on their own.

Follow N1 via mobile apps for Android | iPhone/iPad | Windows| and social media on Twitter | Facebook.