The fighting between Israel and Iran intensified overnight, as both nations kept up their attacks, killing civilians and raising concern among world leaders that the biggest battle between old enemies could lead to a broad regional conflict.

Israel also attacked Iran’s defense ministry’s headquarters, while Iran fired missiles at Israel, in the most direct and prolonged attacks between the rivals ever.

President Donald Trump told ABC News that "it's possible we could get involved" in the ongoing conflict between Israel and Iran. The president made the comments to ABC News' Rachel Scott. He also reiterated that the U.S. is "not at this moment involved" in the conflict.

Edited by Jacqueline Howard, with Hugo Bachega, Ione Wells, Sebastian Usher and Tom Bennett in Jerusalem and Lucy Williamson in Tel Aviv Israel Police say emergency services have had reports of a weapon hitting "one of the settlements" in the northern coastal port city of Haifa.