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

Iranian state television on Thursday broadcast the reading of a new statement purportedly written by Iranian Supreme Leader Mojtaba Khamenei, who has not been seen in public since he was appointed supreme leader in March, succeeding his father -- Ayatollah Ali Khamenei -- who was killed in the opening hours of the U.S.-Israeli war with Iran.

The statement was read by an Iranian cleric to the public in the mausoleum of Ayatollah Ruhollah Khomeini -- the leader and founder of the Islamic Republic -- in Tehran, on the 37th anniversary of his death.

"Defending the oppressed is not only an Islamic duty, but a human and Iranian one as well. And the ruling establishment in Washington has a problem with this nation's identity, independence, and refusal to surrender," Khamenei's message read.

"The Iranian nation, with its new mission alongside the resistance front, has become a source of pride for free nations," it added.

"The [U.S.-led] hegemonic system which established Israel nearly 80 years ago does not bear a strong, independent and privileged Iran on the eastern borders of the void and fake 'Greater Israel,'" the statement continued.

Khamenei claimed that the U.S. and Israel had sustained "heavy blows" in its conflict with Iran.

-ABC News' Somayeh Malekian