*Nikkei down 1.5 percent, led down by bank shares
*Banks hit by growing U.S. credit worries
*Hokkaido Elec Power falls on its loss forecast (Adds stocks and comments)
By Taiga Uranaka
TOKYO, July 15 (Reuters) - The Nikkei share average fell 1.5 percent on Tuesday as financials such as Japan's top lender Mitsubishi UFJ Financial Group <8306.T> tumbled on worries about the health of the U.S. banking sector.
Hokkaido Electric Power Co <9509.T> also slid after the regional utility said it expected to post losses this business year hit by surging fuel prices and outage work at a nuclear power plant. [
]U.S. financial shares were hit on Monday amid growing alarm about regional banks following the collapse of mortage lender IndyMac Bancorp Inc <IMB.N>. A U.S. government pledge of support to stabilise the nation's top mortgage agencies Fannie Mae <FNM.N> and Freddie Mac <FRE.N> failed to curb worries.
"The U.S. is suffering a compound fracture" said Hiroyuki Nakai, chief strategist at Tokai Tokyo Research Center.
"The Fannie Mae and Freddie Mac problem could come to an end if the government were to eventually take over, but inflation and the downturn in the economy remain," he said.
The benchmark Nikkei <
> ended the morning down 193.20 points at 12,816.96. The broader Topix < > lost 1.6 percent to 1,260.26.Domestic concerns were also weighing on the market.
Later in the day, the central bank is expected to keep interest rates on hold and warn that Japan's growth will likely be slower than it had anticipated a few months ago due to skyrocketing oil and raw materials prices. [
]"Japan has been widely perceived to have relatively stable (consumer) prices, but the Bank of Japan might raise its inflation outlook and sharply downgrade its economic overview," said Masayoshi Okamoto, head of dealing at Jujiya Securities.
Among bank shares, Mitsubishi UFJ slid 4 percent at 939 yen and No. 2 Mizuho Financial Group <8411.T> dropped 3.5 percent to 519,000 yen.
The Nikkei business daily said Japan's top three banks had roughly 4.7 trillion yen ($44.3 billion) in debt securities issued by U.S. top mortgage finance agencies as of the end of March. [
]"There is uncertainty over the entire sector," said Naoteru Teraoka, general manager of investment management division at Chuo Mitsui Asset Management.
UTILITIES DOWN
Hokkaido Electric Power dropped 4.6 percent to 2,080 yen after it said it expected to post an operating loss of 38 billion yen compared with its previous forecast for a profit of 21 billion yen.
Other utilities also fell, with Tokyo Electric Power Co <9501.T> down 1.3 percent at 2,710 yen and Kansai Electric Power Co <9503.T> shedding 2.4 percent to 2,400 yen.
Among gainers, Matsui Securities Co <8628.T> jumped 7.3 percent to 662 yen after the publisher of the Nikkei share average said it would include the online broker in the index on July 28.
Square Enix Co <9684.T> gained 4.2 percent to 3,220 yen after Microsoft Corp <MSFT.O> said the Japanese game software publisher would launch the popular "Final Fantasy XIII" game for its Xbox 360 video game console in addition to Sony Corp's <6758.T><SNE.N> PlayStation3. [
]Trade slowed on the Tokyo exchange's first section, with 859 million shares changing hands, compared with last week's morning average of 926 million.
Declining stocks outpaced advancing ones by a ratio of nearly 2 to 1.