ravener
/ˈrævɛnər/Definitions
1. noun
A person who preys on or robs the graves of others, especially in search of human remains or jewelry.
“The police investigated a series of grave robberies committed by a known ravener.”
2. verb
To rob or plunder the graves of others, especially for their valuables or remains.
“The ravener was caught on camera breaking into a cemetery to steal jewelry.”