The Israel Defense Forces said in a statement that Iran has launched further strikes against Israel.

"Defensive systems are operating to intercept the threat," the IDF said.

Israel conducted strikes in western and central Iran, the IDF said in a statement early Monday morning local time.

The IDF said it struck military targets.

Oil prices are higher Sunday as trading begins for the week, hours after Israel said it identified missile strikes from Iran.

U.S, oil is trading at $93.30 a barrel, up 3% and global oil is trading at $95.78, up 2.8%

The average price for a gallon of regular is $4.09, up $1.16 since the war started.

After a sharp selloff on Friday, stock futures are trading lower; Dow futures are down 199 points.

-ABC News' Zunaira Zaki

Israel Defense Forces (IDF) said it identified missiles launched from Iran toward Israel on Sunday and was activating its defensive systems to intercept the threat.

The Iran missile attack on Israel followed strikes carried out by the IDF this weekend on Iran-backed Hezbollah militant targets in southern Beirut, Lebanon.

The alleged missile attack aimed at Israel came just hours after Iranian lawmaker Ebrahim Rezaei promised a "decisive and painful response" to Israel’s airstrikes on southern Beirut on Sunday.

Rezaei, spokesman for the Security and Foreign Policy Committee of Iran’s Parliament, issued a statement on social media, threatening, "This rabid dog must be disciplined and put in its place. Look at the sky of the occupied territories tonight."

IDF sent out a precautionary directive to mobile phones of residents in the area targeted by Iran, asking them to act responsibly and follow instructions to save lives.

Upon receiving an alert, the public is being instructed to enter a protected space and remain there until further notice.

-ABC News' Jordana Miller and Claire Bower

Israeli military forces launched strikes against Iranian-backed Hezbollah military targets in southern Beirut, Lebanon, on Sunday, posing a dangerous moment for U.S.-Iran peace talks and an already tenuous ceasefire in the Persian Gulf region around the Strait of Hormuz.

Israel Defense Forces (IDF) said the strikes were occurring in Beirut and its suburbs. The strikes were in response to the Hezbollah militant group firing missiles into northern Israel.

"In accordance with the directives of Prime Minister Netanyahu and Defense Minister Katz, the IDF has now attacked terrorist headquarters in the Dachiyya neighborhood of Beirut, in response to Hezbollah firing into Israeli territory," Netanyahu and Katz said in a joint statement on Sunday.

Last week, Netanyahu said Israel would attack Hezbollah strongholds in southern Beirut. The IDF had issued evacuation orders for the area.

Sunday's strikes followed a heated phone call on June 1 between Netanyahu and President Donald Trump, who sources told ABC News was angered by Israel's escalation in Lebanon and its potential to imperil the administration's ongoing negotiations with Iran.

Before Sunday's strikes, Iran's Islamic Revolutionary Guard Corps (IRGC) warned in a statement on Iranian state media that if Israel were to strike Beirut, Iran would launch strikes against Israel. Iran, via state media, also threatened to stop negotiations with the United States.

-ABC News' Tom Soufi Burridge