Oil futures surge after US President Donald Trump says attacks ‘obliterated’ targets and Iran threatens to close key oil shipping route

The Hang Seng Index fell 0.8 per cent to 23,349.92 as of 10.04am. The Hang Seng Tech Index dropped 0.9 per cent.

On the mainland, the CSI 300 Index slid 0.3 per cent, and the Shanghai Composite Index shed 0.1 per cent.

Wuxi Biologics slumped 3.3 per cent to HK$23.30, and Techtronic Industries lost 2.9 per cent to HK$82.25. Alibaba Group Holding fell 2.2 per cent to HK$109.20, while Tencent Holdings slipped 1.6 per cent to HK$497.

Oil futures surged after US President Donald Trump said air attacks had “obliterated” the trio of targets in Iran and threatened more military action if Iran did not make peace. Iran threatened to close the Hormuz Strait, which controls one third of the world’s oil shipments.