(Recasts with U.S. markets, adds byline; changes dateline; previous LONDON)
By Herbert Lash
NEW YORK, Sept 16 (Reuters) - Investors dumped equities, oil and emerging market assets on Tuesday and rushed into safe-haven debt as insurer American International Group took center stage in an escalating global financial crisis.
Government debt prices jumped on heightened fears about the global financial system and growing bets the Federal Reserve would slash benchmark U.S. interest rates on Tuesday after a meeting of its monetary policy-makers.
The low-yielding yen rallied and safe-haven government bonds surged, sending the 30-year U.S. Treasury yield below 4 percent for the first time since the early 1960s.
A global exodus from risky assets extended into a second day as investors worried about AIG's <AIG.N> ability to secure the capital necessary to avert more credit agency downgrades.
Concerns the U.S. government would again refuse to provide a financial lifeline drove worries about AIG after federal officials balked at bailing out Lehman Brothers <LEH.N>, forcing the 158-year-old Wall Street icon to file for bankruptcy on Monday.
Shares of AIG were down 35 percent in mid-morning New York trading at $3.09, having been down as much as 68 percent on Tuesday after falling more than 60 percent on Monday.
"A lot is riding on AIG," said Andre Bakhos, president of Princeton Financial Group in Princeton, New Jersey. "The longer we go without a tentative deal to inject capital into AIG, the worse things will get."
The Dow Jones industrial average <
> was down 24.67 points, or 0.23 percent, at 10,892.84. The Standard & Poor's 500 Index <.SPX> was down 7.09 points, or 0.59 percent, at 1,185.61. The Nasdaq Composite Index < > was down 5.96 points, or 0.27 percent, at 2,173.95.Tame readings on U.S. consumer prices in September and tumbling oil prices helped assuage inflation worries and reinforced the view that Fed policy-makers will turn their focus to the market turmoil.
"The Fed has the blanket to ease because of this CPI number. Bonds are flying. Customers and their mothers are running scared," said Michael Franzese, head of government trading with Standard Chartered in New York.
The benchmark 10-year U.S. Treasury note <US10YT=RR> rose 28/32 in price to yield 3.31 percent. The 30-year U.S. Treasury bond <US30YT=RR> gained 1-27/32 to yield at 3.94. percent. Bond prices and yields move inversely.
Oil fell more than 4 percent on rising concern that market turmoil will further undermine demand and send investors into safer havens. Reports that U.S. oil infrastructure had escaped major damage from Hurricane Ike helped push crude prices down.
"If the economic turmoil continues, demand will continue to drop," said Jonathan Kornafel, Asia director at U.S.-based options trader Hudson Capital Energy. "It's a bit of panic in the markets."
U.S. light sweet crude oil <CLc1> was off $3.32 at $92.39 a barrel.
Gold fell nearly 2 percent alongside a sharp drop in oil, before turning higher. Spot gold prices <XAU=> rose $19.95 to $783.40 an ounce.
Gold normally gains on safe-haven buying during financial crises, but portfolio managers have been selling assets across the board after Leman's bankruptcy filing.
Platinum slipped more than 5 percent to its lowest since the end of 2006 on growing fears that slower growth could further slam demand from automakers.
The dollar rose against major currencies, with the U.S. Dollar Index <.DXY> up 0.66 percent at 79.005. Against the yen, the dollar <JPY=> fell 3.68 percent at 103.95.
The euro <EUR=> fell 0.08 percent at $1.4215.
Russia's stock exchange suspended trade for one hour, with the MICEX index <
> off 16.6 percent in the sharpest one-day percentage drop since the 1998 financial crisis, Reuters data showed. Liquidity fears drove the plunge, an exchange official said.Asian shares plunged overnight, hit by a wave of selling in the financial sector. Tokyo's Nikkei share average <
> slumped 4.95 percent to its lowest in three years.MSCI's index of Asia-Pacific stocks outside Japan <.MIAPJ0000PUS> fell 4.8 percent to the lowest since August 2006. It is now down 44 percent from a peak last October. (Reporting by Steven C. Johnson, Ellis Mnyandu and Richard Leong in New York and Matthew Robinson and Agnieszka Flak in London; Writing by Herbert Lash; Editing by James Dalgleish)