Masks of Nyarlathotep
Cult of the Bloody Tongue
This death cult kills victims by carving a symbol into their foreheads while they're alive and then disemboweling them. After their organs have been removed, the cavity is filled with magic that revives the victim as a 'zombie'-like being who mindlessly obeys the one who resurrects it.
The cult is based in Kenya.
Jackson Elias was killed in a New York hotel in the above manner.