Sirens were activated in Jerusalem at around 01:45 local time (23:45 BST).
Loud explosions were heard with the air defence systems shooting down objects over the city, and multiple interceptions lit up the night sky.
Iran has launched dozens of drones and missiles at Israel in a retaliatory attack, the Israeli military has said.
This article was originally published by Bbc.co.uk. Read the original article here.