Emergency services say ten have been killed in Israel, while Iranian state media have given little information about casualties in Iran.

Stock markets across the Gulf fell on Sunday morning after Israel and Iran launched fresh attacks on each other overnight, sparking fears of a widening conflict in the Middle East.

Iranian media reported that Israel struck the South Pars Gas Field in what would be the first attack on an Iranian energy site.

Under the Islamic Republic that took power in 1979, enmity toward Israel has been a core ideological tenet of Iranian foreign policy and a key driver in its regional policy. Over decades, their rivalry played out mainly through indirect actions by Iran and by covert operations from Israel.

Israel and Iran traded fire for a third straight day on Sunday, with rising casualties and expanding targets marking a sharp escalation in the conflict between the longtime adversaries. Overnight Iranian strikes killed at least ten people in Israel,

Israel's military said early Sunday it had struck Iran's defence ministry headquarters, "nuclear weapons project" infrastructure sites and other targets, as the rival nations exchanged fire for a third day.

While Israel and Iran trade attacks, Palestinians in Gaza have been struggling to find food, connect to the internet and survive airstrikes.

Israel's airstrikes on Iran's military and nuclear facilities led PM Netanyahu to hold urgent talks with world leaders, including PM Modi.