Israel unleashed airstrikes across Iran for a third day and threatened even greater force as some Iranian missiles evaded Israeli air defenses to strike buildings in the heart of the country.

Israel and Iran kept up their attacks, killing and wounding civilians and raising concern among world leaders meeting in Canada this week that the biggest battle between the two old enemies could lead to a broader regional conflict.

Israeli authorities triggered alerts for renewed missile attacks on Sunday, including around Tel Aviv, after Iranian missiles destroyed buildings overnight and killed at least 10 people, as President Donald Trump urged both sides to "make a deal.

Explosions have been seen over Tel Aviv and Jerusalem as the country faces yet another barrage of missiles from Iran. It comes after explosions were reported in central Tehran, as attacks continue between Iran and Israel.

The fighting, which began on Friday with a surprise Israeli attack on Iran, has been some of the fiercest and most prolonged in the decades-long enmity between Israel and Iran, raising fears of a wider war that could draw in the United States and other powers.

Tel Aviv stocks erased early losses and ended higher on Sunday in the first trading session since the start of a wave of missile strikes between Israel and Iran on Friday, as Israel and its economy attempt to remain as open as possible.

The Indian Embassy in Iran is observing the security situation for Indian students and assisting with relocations to safer areas. The Embassy is also coordinating with community leaders on safety and welfare measures.

Israel has launched a series of strikes against Iran, targeting the country’s nuclear program and other military infrastructure. Iran has launched its own strikes in retaliation.

Israeli citizens were ordered to head to bomb shelters on Friday night amid retaliatory missile strikes from Iran.