'Shy' king cobra on the loose leads Orlando school to lock children inside

Reptile experts urged local residents not to panic but deadly snake - who escaped from owner's cage - has the venom to kill 20 humans

Children at a Florida school were locked indoors on Thursday as wildlife officials scoured the grounds for a venomous 8ft-long king cobra that broke free from a cage and slithered away from its owner's home.

Staff at Clarcona elementary school in Orlando moved physical education classes and recess inside until the deadly snake, which authorities say has enough venom to kill 20 humans, was recaptured.