NEW YORK — Crude oil prices soared to $100 a barrel today for the first time, temporarily reaching that milestone amid an unshakeable view that global demand for oil and petroleum products will outstrip supplies.

Surging economies in China and India fed by oil and gasoline have sent prices soaring over the past year, while tensions in oil producing nations like Nigeria and Iran have increasingly made investors nervous and invited speculators to drive prices even higher.

Violence in Nigeria helped give crude the final push over $100. Bands of armed men invaded Port Harcourt, the center of Nigeria's oil industry Tuesday, attacking two police stations and raiding the lobby of a major hotel. Word that several Mexican oil export ports were closed due to rough weather added to the gains, as did a report that OPEC may not be able to meet its share of global oil demand by 2024.

Light, sweet crude for February delivery rose $4.02 to $100 a barrel on the New York Mercantile Exchange, according to Brenda Guzman, a Nymex spokeswoman, before slipping back to settle at a record close of $99.62, up $3.64.

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