Brazilian influencer Carlos Medeiros was found buried in his childhood friend's backyard on Sunday after disappearing at Christmas.
The 26-year-old YouTuber was last seen by family at a fireworks show on December 25 when he told his sister he was going to visit his friend's house for a late holiday dinner in the São Paulo city of Itapecerica da Serra.
But he was never seen again and his body was discovered on New Year's Eve in a shallow grave at the property.
The man who owns the home, 28, and his wife, 24, turned themselves into police on Monday and were placed in pre-trial detention for one month, Brazilian news outlet G1 reported.
They reportedly told the Civil Police that Medeiros, who had close to two million subscribers on his YouTube channel, took cocaine and then had a heart attack.