Live updates: Trump says 'very good' Iran talks, hints at 'total resolution'

Fifteen people were injured in an Iranian missile attack in the Tel Aviv area Sunday, according to Israel Fire and Rescue.

One of the injured is in moderate condition while the rest suffered mild injuries, emergency services officials said.

According to Israel Fire and Rescue there were several similar scenes across central Israel, including a vehicle that was hit as well as a hit on a building in Tel Aviv. There were also strikes on several locations in surrounding cities, officials said.

-ABC News' Dorit Long and Jordana Miller

The Iranian military said on Sunday that Tehran would seek to retaliate against U.S. energy sites and infrastructure in the Gulf region if Washington moves to strike Iranian power plants, according to Fars News Agency, a semi-official state news agency affiliated with Iran's Islamic Revolutionary Guard Corps.

Trump said on Saturday that the U.S. would "hit and obliterate" Iranian power plants if the Strait of Hormuz wasn't opened within 48 hours.

"If Iran's fuel and energy infrastructure is attacked by the enemy, all energy infrastructure, as well as information technology (IT) and water desalination facilities, belonging to the U.S. and the regime in the region will be targeted pursuant to previous warnings," said Lt. Col. Ebrahim Zolfaqari, a spokesperson for the Iranian Armed Forces, according to Fars.

The near-total internet blackout in Iran entered its 23rd day early on Sunday, according to NetBlocks, a web monitoring organization.

"The measure adds to the wartime distress of millions of civilians who lack independent sources of information and alerts," NetBlocks said.

A shell launched from Lebanon into northern Israel resulted in damage, the Israel Defense Forces said on Sunday.

"The incident is under investigation," an IDF spokesperson said. Israel has been targeting infrastructure related to Hezbollah, an Iranian proxy, in southern Lebanon.

Israel's first responders said two vehicles had caught fire near the border, adding in an update that there appeared to be someone "trapped in a vehicle, showing no signs of life."