Keith McCaw, one of the billionaire brothers that helped to create a cellular empire in the U.S., was found dead in a hot tub in his Seattle mansion early Sunday morning.

McCaw, 49, died of natural causes, according to a report in the Seattle Post-Intelligencer. "All we know is that there was no foul play here, just natural causes," family spokesperson Bobby Ratliffe told the paper. An autopsy is scheduled for this (Monday) morning.

Keith McCaw worked in various management positions at the family company, McCaw Cellular Communications, which was run by his older brother Craig. The younger McCaw made his millions when the firm was sold to AT&T Corp. (NYSE: T) in 1994 for $11.5 billion.

McCaw is survived by his wife and two daughters.

— Dan Jones, Senior Editor, Unstrung
http://www.unstrung.com