Meanwhile, a top Iranian cleric says Iran's latest missile tests are not a threat to Israel, but the country will respond to any aggression.

Ayatollah Mohammad Emami Kashani of Iran's highest arbitration body also warns US and Israel of a regrettable response if they had plans to invade his country.

"Iran is not seeking war with Israel. It does not want to shoot its missiles to Tel Aviv. But if you invade Iran, Iran will respond in such a way that you will regret it."

The remarks came three days after Iran's elite Revolutionary Guards fired nine long and medium range missiles on Wednesday.