U.S. crude futures up $5 on Iran, Fed action
The Pentagon said it had no reports of an Iran landing.
Crude's rally also was fueled by the Federal Reserve's move to backstop the U.S. commercial paper market, announcing creation of a special-purpose facility with the Treasury Department's blessing to begin buying commercial paper.
An Australian interest rate cut, talk of an OPEC output cut had earlier helped bolster crude futures.
On the New York Mercantile Exchange at 9:27 a.m. EDT, November crude was up $3.75, or 4.27 percent, at $91.56 a barrel, trading between $88.36 and $93.02.
(Reporting by Robert Gibbons)