Officials are investigating the killing of four Galapagos giant tortoises amid fears the critically endangered creatures are being hunted for meat.
Last year 15 of the species were slaughtered and Ecuador authorities believe that the animals are being killed for meat - which has been illegal since 1933.
The remains of the four tortoises killed recently were found in the Galapagos National Park on Isabela Island, the largest island in the archipelago.
