Crude oil futures jumped more than 3% Sunday after Israel struck two natural gas facilities in Iran, raising fears that the war will expand to energy infrastructure and disrupt supplies in the region.

U.S. oil prices already jumped last week, which could cause prices at the pump to rise about 20 cents a gallon in the coming weeks, according to one estimate.

DUBAI, United Arab Emirates (AP) — Israel launched an expanded assault on Iran on Sunday, with direct strikes targeting its energy industry and Defense Ministry headquarters, while Tehran unleashed a fresh barrage of missiles blamed for the deaths of four people and injuries of many others.

Israel's airstrikes have deepened a climate of fear within Iran, where there is a shortage of reliable information. A woman in Tehran said one of the worst things about the attacks is that they usually come without warning.

A series of loud explosions are heard in central Israel as the military says it carried out intelligence-based strikes in Tehran.

Iran has been battling an acute energy crisis for months because of gas shortages, and repairing any damage would both be costly and take significant time.