Israel and Iran launched fresh attacks on each other overnight into Sunday, killing scores and raising fears of a wider conflict, as U.S. President Donald Trump said it could be ended easily while warning Tehran not to strike any U.S. targets, Reuters reported.

Israeli rescue teams combed through rubble of residential buildings destroyed by Iranian missiles, using sniffer dogs and heavy excavators to look for survivors after at least 10 people, including children, were killed, raising the two-day toll to 13.

Sirens rang out across Israel after 4 p.m. on Sunday in the first such daylight alert, and fresh explosions could be heard in Tel Aviv.

In Iran, images from the capital showed the night sky lit up by a huge blaze at a fuel depot after Israel began strikes against Iran's oil and gas sector - raising the stakes for the global economy and the functioning of the Iranian state, according to Reuters.