The Israeli military says Iran has fired around 100 missiles at Israel, and air raid sirens are sounding across the country.
Residents were ordered to shelter in place and remain close to bomb shelters.
Israel has warned there would be “repercussions” if Iran attacks.
A senior Iranian official told Reuters that they are fully ready for retaliation after missiles were launched at Israel.
(This is a breaking news story. Please watch this space for further updates)