In the first interview since her son's death, Michael Jackson's mother, Katherine Jackson, is speaking out about the loss of her son and the rumors surrounding her family.

In a phone interview that aired on Sunday Night's "Geraldo at Large" on the Fox News Channel, the 79-year-old shot down rumors that her husband, Joe Jackson, is banned from seeing the grandchildren, and banned from the Jackson home.

"I don't know why they're saying he's not being allowed in the house," Katherine says. "My husband's never done nothing of the sort that they trying to say he did 39 years ago. I don't understand that, and I just believe it's something that they cooked up."

When asked if Joe was a good grandfather she replied, "Of course he is. And the children will tell you that he is."

Katherine also spoke out on the accusations and pending investigation surrounding Dr. Conrad Murray in relation to her son's death.

"All I know is that my son is dead, and I don't think he just died of natural causes or whatever," she says. "He's too young for that. Something happened, I don't know what it was and I can't say."

The mother of nine was reluctant to talk at length about her three grandchildren, Prince Michael, Paris Michael, Prince Michael II (Blanket), but she did tell the talk show host, "The children are doing fine."