LOS ANGELES - There were no signs of foul play or trauma in the death of Sage Stallone, whose sudden passing at 36 has devastated his father, Sylvester Stallone, a publicist and investigators said.

Sage Stallone was found unresponsive in his Los Angeles home on Friday by a housekeeper. "Sylvester Stallone is devastated and grief-stricken over the sudden loss of his son," publicist Michelle Bega said.

No suicide note was found, said L.A. Assistant Chief Coroner Ed Winter, although prescription bottles were recovered from the home in the Studio City area. An autopsy will be performed in the next few days, he said, and investigators will check Stallone's medical history, but a cause of death was likely to take several weeks while toxicology tests are performed.

Sage Moonblood Stallone, the oldest of Sylvester Stallone's children, co-starred with his father in two films. He made his acting debut in 1990's "Rocky V" and also appeared with his father in 1996's "Daylight."

George Braunstein, an attorney who represented Sage Stallone for 15 years, said he was planning on getting married for the first time, and had frequent requests to work on films. "He was a full-of-life filmmaker with his whole future ahead of him," Braunstein said.

So, why didn't he pay cash?Billionaire Mark Zuckerberg is giving new meaning to the term "the one percent." The Facebook founder refinanced a $5.95 million mortgage on his Palo Alto, Calif., home with a 30-year adjustable-rate loan starting at 1.05 percent, according to public records for the property. While almost all lending rates have reached historic lows this year, the borrowing costs available to high-net-worth individuals are even lower if the person is willing to bear the risk of monthly interest rate adjustments. Zuckerberg, 28, who recently got married, is the world's 40th-wealthiest person, with a net worth of $15.7 billion.

WHO KNEW? Karl Rove married Karen Johnson in a small, under-the-radar wedding in Austin, Texas, late last month. The nuptials of the GOP mega-strategist, 61, and the lobbyist, in her mid-40s, were first noted in a Politico story about his dealings with casino billionaire and campaign donor Steve Wynn, who apparently flew the newlyweds to Naples on his jet. Rove and Johnson have been quietly dating for a couple of years, according to Texas pals. It's the third marriage for Rove, who was divorced in 2009 from Darby Rove.

FARM AID: The annual Farm Aid benefit concert is coming to Hershey, Pa., on Sept. 22. The lineup includes regulars Dave Matthews, Willie Nelson, Neil Young and John Mellencamp. Also on the bill are Jack Johnson, ALO, and Pegi Young and the Survivors.