Los Angeles - The executors of Michael Jackson's estate say they are concerned about the singer's mother and his three children amid a family feud.

In a letter posted on fan sites Tuesday, John Branca and John McClain say they are doing what they can to protect those family members from “undue influences, bullying, greed, and other unfortunate circumstances.”

The letter came hours after sheriff's deputies responded to a family disturbance at the home where Katherine Jackson and her three grandchildren live.

Authorities say no arrests were made, but there is an active battery investigation.

The letter from Branca and McClain says they don't have standing to intervene in the guardianship of Jackson's children, but unspecified steps are being taken to protect them. - Sapa-AP