Singapore equities closed lower on Thursday, losing nearly 1% and tracking regional losses following a national address by U.S. President Donald Trump that signaled an intensification of the Iran conflict.

The Straits Times Index (STI), a key benchmark for the Singapore Exchange, ranged between 4,926.57 and 5,010.57 throughout the day. It ended the session at 4,947.50, down 28.33 points or 0.6% compared to Tuesday's close.

In his most recent speech, Trump threatened to increase strikes on Iran over the next three weeks, sending US stock futures down 0.67%.

On the corporate front, shares of CapitaLand Ascendas REIT (SGX:A17U) closed nearly 1% lower as it issued 249.4 million private placement units at SG$2.406 per unit.

Acrometa (SGX:43F) was down over 5% as it said it had decided to terminate the proposed disposal of its subsidiary, Acro Harvest Engineering.

Meanwhile, Low Keng Huat (Singapore) (SGX:F1E) is set to be delisted from the official list of the Singapore Exchange Securities Trading on April 7.

STI down 0.6%; YZJ Shipbldg, UOL down 3%; Keppel down 2%; Seatrium, OCBC, Singtel down 1%.