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For the latest study, the team examined samples from normal mice and compared them with living cortical brain tissue obtained, with permission, from six people undergoing epilepsy surgery at The Johns Hopkins Hospital.

Han was briefly released in November to undergo eye surgery but has returned to pre-trial custody.

It was significant because it underwent an exceptionally rapid strengthening, going from a tropical storm to a Category 5 hurricane in about a day.

In Australia, budget airline Jetstar cancelled 90 flights after confirming around a third of its fleet was impacted, with disruption expected to continue all weekend despite the majority of aircraft having already undergone the update.

Eight people have been arrested on suspicion of corruption over the renovation works the blocks had been undergoing.