A teenage boy travelling alone opened an emergency door after his plane landed, slid down the wing and jumped on to the tarmac at San Francisco before shocked passengers could do anything to stop him, witnesses said.

A warehouse fire in California that killed 36 people does not appear to have been started intentionally and may have been caused by a refrigerator or other electrical appliance, investigators have said.

USA: Jeanette and Alexander Toczko were each eight years old when they became smitten with one another.