Singapore shares fell on Wednesday, as the region ended mixed over US President, Donald Trump's hardline stance towards Iran at the UN General Assembly.

The Straits Times Index (STI), a key benchmark for the Singapore Exchange, ranged between 5,682.58 and 5,735.97 throughout the day. It ended the session at 5,709.91, down 13.85 points or 0.2% compared to Tuesday's close.

CityDev up over 3%; YZJ Maritime up over 2%; iFast, OCBC Bank down over 1%; Seatrium down over 2%.

At the UN General Assembly, Trump called for Iran's complete economic isolation, despite predicting a deal following the conclusion of the US midterm elections.

In economic news, Singapore's core consumer price index (CPI), which excludes accommodation and private transport costs, rose 2.2% year over year in August, according to joint data released by the Monetary Authority of Singapore (MAS) and the Ministry of Trade and Industry (MTI).

On the corporate front, shares of Datapulse Technology (SGX:BKW) closed nearly 2% lower as it received a no-objection letter from Singapore Exchange Regulation, granting an extension of time to hold its annual general meeting and issue its annual report for the fiscal year ended July 31.

ISOTeam (SGX:5WF) has raised SG$4.72 million from accredited and institutional investors following the close of its three-month Series 006 commercial paper.

Meanwhile, Incredible (SGX:RDR) filed an application with the Singapore High Court to place the company under judicial management.