TEHRAN, July 5, (APP/AFP) Iran on Tuesday condemned three suicide bombings that rocked Saudi Arabia, one of them targeting Islam’s second holiest place, the Prophet’s Mosque in Medina.

“There are no more red lines left for terrorists to cross. Sunnis, Shiites will both remain victims unless we stand united as one,” Foreign Minister Mohammad Javad Zarif said on Twitter.

Four security guards were killed in the Medina bombing. The other attacks on Monday targeted the US consulate in the Red Sea city of Jeddah and the Shiite minority in the east of kingdom.

“Terrorism knows no border or nationality and there is no solution except creating an international and regional unity against this phenomenon,” foreign ministry spokesman Bahram Ghasemi told state broadcaster IRIB.

There were no immediate claims of responsibility.