Japan's Nikkei slipped 1.4 per cent, but elsewhere most shares were up. Hong Kong's Hang Seng Index rose 0.3 per cent, while China's Shanghai Composite Index shrugged off earlier losses to trade 0.2 per cent higher.
In a rare move, the Fed pointed to global risks when explaining why it had delayed what would have been the first interest rate hike in nearly a decade. This led many to conclude that China’s market slide last month had raised red flags for Fed officials.
Read more: Global risks trigger Yellen Dovebomb
"Heightened concerns about growth in China and other emerging market economies have led to notable volatility in financial markets," the Fed said in its policy statement after a two-day FOMC meeting. It added the risks to the US economy remained nearly balanced, but that it was “monitoring developments abroad”.
Chris Weston, a market analyst at spreadbetter IG, said: "It seems logical the central bank would have raised rates if it weren’t for recent international development, but they tried desperately to buy themselves flexibility."
"This was shown in the narrative where they detailed they are ‘monitoring developments abroad'".