Throngs of people flooded the streets of Tehran on Thursday for the funeral procession of Ismail Haniyeh, the Hamas political leader who was assassinated early Wednesday.

Iran's supreme leader, Ayatollah Ali Khamenei, led funeral prayers over the bodies of Ismail Haniyeh and his bodyguard, who was also killed.

Haniyeh was killed in Tehran, the Iranian capital. His remains are expected to be transferred to Qatar, where he had lived in exile since 2019, for burial on Thursday.

No country or organization has yet taken credit for the assassination, but Khamenei appeared on Tuesday to place the blame on Israel. He said it was Iran's "duty to take revenge."

-ABC News' Morgan Winsor

Israeli officials said Thursday they had killed Mohammed Deif, commander of Hamas' military wing.

Deif was killed in "precise, targeted strike" in Khan Yunis on July 13, according to a joint statement by the Israel Defense Forces and the Israel Securities Authority.

Israeli Defense Minister Yoav Gallant announced the death in a post on social media, calling Deif the "Osama bin Laden of Gaza."

Gallant said his killing was "a significant milestone in the process of dismantling Hamas as a military and governing authority in Gaza, and in the achievement of the goals of this war."

Israeli Air Force fighter jets conducted the airstrike on a compound in the southern Gazan city, the joint statement said. The strike also killed Rafa'a Salameh, the Commander of Hamas' Khan Yunis Brigade, the military said.

"Over the years, Deif directed, planned, and carried out numerous terrorist attacks against the State of Israel," the joint statement said.

The statement continued, "Deif operated side-by-side with Yahya Sinwar, and during the war, he commanded Hamas' terrorist activity in the Gaza Strip by issuing commands and instructions to senior members of Hamas' Military Wing."

Gaza’s Ministry of Health said last month that at least 90 people, half of whom were children and women, were killed and 300 others were injured in the attack.

Hamas officials have not confirmed Deif’s death.

-ABC News' Morgan Winsor and Kevin Shalvey

Delta Air lines has suspended all flights from John F. Kennedy International Airport to Tel Aviv through Friday, Aug. 2, due to ongoing conflict in the region.

"Delta is continuously monitoring the evolving security environment and assessing our operations based on security guidance and intelligence reports and will communicate any updates as needed," Delta said in a statement.

-ABC News' Sam Sweeney

Al Jazeera Arabic journalists Ismail Al-Ghoul and cameraman Rami Al-Refee have been killed in whilst reporting in Gaza, the network has announced.

The journalists were reporting on the assassination of Ismail Haniyeh. Al-Ghoul’s last post on social media was of him at the ruins of the Hamas leader's home in Gaza.

A vehicle carrying the two journalists was targeted by what the CPJ says appears to be a "direct strike" in Al Shafi camp, west of Gaza city.

"Ismail was known for his professionalism and dedication, highlighting the suffering and atrocities in Gaza, particularly at Al-Shifa Hospital and in the northern region. He was detained and tortured by Israel while covering the Al Shifa Hospital siege, yet he continued reporting after his release," Al Jazeera said in a statement.

Without Ismail, the harrowing images of these massacres would remain unseen. He was a resolute journalist who overcame hunger, illness, and the death of his brother. He tirelessly reported on Gaza's events through Al Jazeera, fulfilling his mission for his people and homeland. May they rest in peace," Al Jazeera said.