BBC:

Israel launched strikes across Iran on Friday, saying they targeted the "heart" of Iran's nuclear programme.

The strikes killed Hossein Salami, chief of Iran's Islamic Revolutionary Guards - a powerful branch of the country's armed forces - other senior military figures and nuclear scientists, Iranian state media reported.

State media reported civilians, including children, were also among those killed.

The BBC is not able to independently verify these reports.

When and where did the strikes happen?

Explosions were reported in Iran's capital Tehran around 03:30 local time (01:00 BST).

Iranian state TV said residential areas in Tehran were hit, with blasts also heard north-east of Tehran.

In Israel, residents were woken by air raid sirens around the same time and received emergency phone alerts.

Israel's military said it had struck "dozens of military targets, including nuclear targets in different areas of Iran".

Hours after the initial strikes, an explosion was reported at the Natanz nuclear facility, which is located about 225km (140 miles) south of the capital, according to Iranian state media.

The global nuclear watchdog, the International Atomic Energy Agency (IAEA), later confirmed the Natanz facility had been hit.

The IAEA said it was informed by Iranian authorities that there has been no increase in radiation levels at the Natanz site.

The Israeli military said Iran launched a counter-attack of more than 100 drones, with Israeli media reporting all the drones were intercepted. A state of emergency was declared in Israel.

The US said it was not involved in the strikes, which hit Iran's main nuclear enrichment facility.

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