* U.S. stocks follow Europe and Asia lower
* Oil tumbles after Saudi comments
* Saudis under pressure as Turkey comments on Khashoggi death
* Demand rises for gold and treasuries in safety bid
* Graphic: World FX rates in 2018 http://tmsnrt.rs/2egbfVh (Updates to mid-afternoon, adds commentary)
By Sinéad Carew
NEW YORK, Oct 23 (Reuters) - Wall Street indexes were down on Tuesday though they pulled back from the day's lows after investors fled to safety on worries about a global slowdown in growth while oil tumbled and pressure mounted on Saudi Arabia over the death of journalist Jamal Khashoggi.
Benchmark U.S. Treasury prices rose, sending yields to their lowest levels in almost three weeks as tumbling equity markets worldwide fed demand for low-risk debt. flight to safety, which started in Asia and continued through Europe's trading day, also put pressure on the U.S. dollar as the safe-haven Japanese yen and Swiss franc were in favor. prices fell as much as 5 percent after Saudi Arabia said it could supply more crude quickly if needed, reassuring investors ahead of U.S. sanctions on Iran's crude exports that start next month. O/R
On top of geopolitical worries and Nov. 6 U.S. congressional midterm elections, Oliver Pursche, chief market strategist, Bruderman Asset Management, New York, cited an uncertain growth outlook amid a U.S.-China trade war.
“There's the question of impact on global growth from tariffs and the ongoing trade war. President Trump and President Xi have agreed to meet during the G-20 summit, but that's post-election. It's clear that nothing is going to happen for three to four weeks,” said Pursche.
But after hitting a session low of 2691.43 around 10:20 a.m. ET, the S&P gradually pared losses, though trading was volatile for much of the day.
The Dow Jones Industrial Average .DJI fell 67.24 points, or 0.27 percent, to 25,250.17, the S&P 500 .SPX lost 9.62 points, or 0.35 percent, to 2,746.26 and the Nasdaq Composite .IXIC dropped 16.56 points, or 0.22 percent, to 7,452.07.
Of the S&P 500's 11 major sectors, energy .SPNY was the biggest percentage decliner, last down -2.34 percent due to the tumble in oil futures.
U.S. crude CLcv1 fell 4.05 percent to $66.55 per barrel and Brent LCOcv1 was last at $76.63, down 4.01 percent on the day.
Investors were anxious about the economic ramifications of Saudi Arabia's isolation after Turkish President Tayyip Erdogan said intelligence and security institutions have evidence Khashoggi's death at a Saudi consulate in Istanbul this month was planned. He dismissed attempts by Riyadh to blame the "savage" killing on rogue operatives. President Donald Trump had said Monday he was not satisfied with what he heard from Saudi Arabia about the death but did not want to lose investment from Riyadh. 10-year notes US10YT=RR last rose 8/32 in price to yield 3.1638 percent, from 3.194 percent late on Monday.
The dollar index .DXY fell 0.09 percent, with the euro EUR= up 0.08 percent to $1.1472.
The Japanese yen strengthened 0.33 percent versus the greenback at 112.46 per dollar, while sterling GBP= was last trading at $1.2988, up 0.21 percent on the day.
Spot gold XAU= added 0.7 percent to $1,230.51 an ounce after hitting its highest level since mid-July as investors looked for safety.
Emerging market stocks lost 2.05 percent. MSCI's broadest index of Asia-Pacific shares outside Japan .MIAPJ0000PUS closed 2.18 percent lower, while Japan's Nikkei .N225 lost 2.67 percent.
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