South Korean tech giant Samsung has urged owners of the Galaxy Note 7 to turn off its high-end smartphone while it investigates new reports of the device catching fire.

The firm also said it would stop sales of the phone, and halt production.

Samsung recalled 2.5 million phones in September after complaints of exploding batteries, and later insisted that all replaced devices were safe.

But there are now reports that even those phones are catching fire.

A man in Kentucky said he woke up to a bedroom full of smoke from a replaced Note 7, days after a domestic flight in the US was evacuated after a new device started emitting smoke in the cabin.