Israel's Haifa-based Bazan Group said all refinery facilities have been shut down after a power station used to produce steam and electricity were significantly damaged in an attack by Iran, according to a regulatory filing on Monday.

Iran's missile attack has shut down Israel's largest oil refinery in Haifa, killing three employees and sparking massive fires. The escalation marks the deadliest phase yet in the ongoing Iran-Israel conflict.

The total number of those killed on Sunday night and the early hours has now reached eight, with 22 civilians having been killed since the start of the conflict.