The Duke and Duchess of Cambridge, less formally known as William and Kate, toured the Kaziranga national park in Assam, India in an effort to raise conservation awareness.
Sadly, only hours after their visit, poachers killed one of the park's rhinos and left with its horn, reports the Guardian.
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Park personnel were alerted to the slaying by a series of gunshots.
When they arrived at the scene, they found the deceased and de-horned animal and upwards of a hundred spent AK-47 cartridges.
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Forest guards fired at the perpetrators but were unable to stop them from fleeing.
Poaching is becoming an increasingly common problem at Kaziranga.
About a half dozen rhinos have been killed there this year.