Is investing in the Islamic Gulf Investment Company, located in the Eastern Province of Saudi Arabia, permissible in Islamic law, or what are the permissible Islamic banks in Saudi Arabia or the Arabian Gulf?

We do not have knowledge of the investment avenues in the aforementioned company. The Islamic banks in the Kingdom are Al-Rajhi Bank, Bank Al-Bilad, and Alinma Bank. The general rule concerning companies and banks committed to Islamic banking is that it is permissible to invest in their programs, unless it becomes clear that there is an error in a specific program, in which case investment in it must be avoided.