Boyfriend, 27, is charged with beating to death his girlfriend's missing two-year-old son 'for urinating in his pants' after he told police the child had been taken by an unknown relative
Terrell Rhodes, 27, is charged with first-degree murder in beating death of his girlfriend's son, Amari Nicholson
Two-year-old Amari was reported missing from Las Vegas hotel on May 5, after Rhodes claimed his paternal aunt pick him up
Police arrested Rhodes on Tuesday; it's unclear whether they have recovered Amari body
Amari's mother, Tayler Nicholson, said Rhodes had confessed to killing her son
In a social media exchange, Nicholson claimed Rhodes beat the toddler to death for urinating in his pants