The executors of Michael Jackson's estate said they were concerned about the welfare of the singer's mother and his three children amid a nasty family feud over money that has prompted three law enforcement investigations.

Executors John Branca and John McClain wrote in a letter posted online to fans of the pop superstar that they were doing everything they can to protect his children.

A letter posted stated that they are concerned about protecting them from undue influences, bullying, greed, and other unfortunate circumstances.