Drone flies over sea to deliver Singapore Post package

Singapore Post is the latest package delivery firm to trial drone-based deliveries.

The firm flew a package containing a t-shirt and letter from an industrial estate on the main island to Pulau Ubin - a nearby smaller island.

The company has described it as the "first step" towards regular final-mile drop-offs by drone.

But it acknowledges there are still technical and safety issues to be solved.