Oil fell from a nine-month high after a euro-area industry index unexpectedly declined, signaling a slowdown in demand and countering concern that a conflict between Iran and Western nations may disrupt supplies.

Futures slipped as much as 0.6 percent in New York, after climbing their highest since May as United Nations inspectors in Iran were denied access to a suspected nuclear-related military base. Equities declined and the euro erased gains against the dollar after an index based on a survey of euro-region purchasing managers dropped below 50, indicating a contraction.

The figures indicate that “euro-zone economies will remain very weak in the months ahead,” said Andy Sommer, a senior trader at EGL AG in Dietikon, Switzerland. “That means oil demand in the euro zone remains weak.”

Oil for April delivery on the New York Mercantile Exchange fell as much as 60 cents, or 0.6 percent, to $105.65 a barrel and was at $105.78 at 10:09 a.m. London time. The contract earlier rose to $106.41, the most since May 5.