The New York-based diversified financial group has already raised about $30 billion in capital from investors since late last year. Gulf states making investments in Citigroup include Abu Dhabi with $7.5 billion in November. The bank also received $14.5 billion in January from investors including companies run by Singapore and Kuwait. Saudi Prince Alwaleed Bin Talal recently raised his investment in the firm.
Sameer al-Ansari, the chief executive of the Dubai agency said more would be necessary, according to Reuters.
It will take a lot more than that to rescue Citi and other financial institutions, al-Ansari said at a private equity conference in Dubai. The state-owned Dubai firm manages around $13 billion in assets, including investments in HSBC Holdings Plc , and India's ICIC Bank Ltd.
Shares of Citigroup fell 64 cents, or 2.77 percent to $22.45 in pre-market trading.