The Iranian Revolutionary Guard claims it launched airstrikes into eastern Syrian on Sunday, according to the Guard's website.

The missile strikes were in response to recent terror attacks in Tehran that the Islamic State in Iraq and Syria (ISIS) claimed credit for.

The Guard did not provide many specifics, but said the surface-to-surface medium range missiles fired from Iran targeted Deir el-Zour, Syria.

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The Shiite-majority country is a key ally of embattled Syrian President Bashar Assad.

The strikes comes after gunmen and suicide bombers targeted Iran's parliament and the shrine of its revolutionary leader earlier in June, killing at least 12 people. ISIS claimed responsibility for the attack.