Japan's top government spokesperson has strongly condemned the escalation of attacks in the Middle East after Iran fired a barrage of missiles at Israel Tuesday.

Chief Cabinet Secretary Hayashi Yoshimasa was speaking to reporters on Wednesday.

He expressed grave concerns, saying the attack will further worsen the situation in the region, and called on all relevant parties to de-escalate.

Hayashi also said the government will take all possible measures to protect Japanese citizens abroad and continue to make every diplomatic effort to prevent further deterioration of the situation.

He added that the government has had no reports of any Japanese people suffering injuries.

Hayashi also referred to preparation status for a possible evacuation of Japanese nationals from Lebanon.

He said Air Self-Defense Force transport aircraft and SDF units will be sent to Jordan and Greece as soon as arrangements are made.

The spokesperson added that around 50 Japanese nationals are currently in Lebanon. He said the government is communicating with them and responding appropriately to the situation.