A mysterious vampire beast has killed 50 livestock by "sucking their blood dry" leaving farmers terrified it could be the legendary chupacabra, reports claim.

Officials and vets in northern Chile are said to be baffled after dozens of baby llamas and alpacas were found with puncture wounds in the chest.

The injuries do not match those made by usual predators such as pumas and foxes which normally go for the neck, experts said.

Farmers claimed the creature only attacks at night and does not leave any footprints to help identify or track it, further adding to the local panic.

Some believe it could be the mythical chupacabra, which is said to suck the blood from goats, cows and horses.

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