It comes after Iran's top security official Ali Larijani was also killed yesterday. Iran has not yet commented on Khatib. BBC reported.
Meanwhile, Israel has launched a series of strikes on Lebanon's capital Beirut, as it continues its offensive against Hezbollah
One blast flattened a building in the city centre - this isn't the so-called Hezbollah heartland of southern Beirut, but an area surrounded by businesses and hotels, writes the BBC's Wyre Davies from the scene
Retaliatory strikes by Iran and its allied militia groups continue across the Middle East - two people were killed in Israel, with blasts and drone interceptions reported in Dubai, Qatar, Kuwait, Iraq, Bahrain and Saudi Arabia
Earlier, the US military said it used bunker-busting "deep penetrator" bombs to hit Iranian missile sites along the Strait of Hormuz; the vital waterway for transporting oil has been effectively blocked by Iran since the war began
In Iran, residents live in constant dread - one woman says leaving home "is like gambling with my life"
As we've just reported, the Iranian President Mazoud Pezeshkian has confirmed the country's Intelligence Minister Esmail Khatib has been killed.
In a post on X, Pezeshkian says: "The cowardly assassination of my dear colleagues Esmaeil Khatib, Ali Larijani, and Aziz Nasirzadeh, along with some members of their families and those accompanying team has left us mourning."
The deaths of Larijani, Iran's top security official, and Nasirzadeh, the country's defence minister, have previously been confirmed.
