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.

Hostilities between Israel and Iran have entered the fifth day after Israel refused any diplomatic overtures from Iran overnight to stop the ongoing conflict. In response, The Islamic Revolutionary Guard Corps (IRGC) has issued an evacuation directive,