Swae Lee and Slim Jxmmi's little brother Michael Brown has been taken into custody for killing their stepdad.

62-year-old Floyd Sullivan had raised Swae, Slim and Michael since they moved to  Mississippi with their mother.

Police took the 19-year old Brown in after finding Sullivan shot to death in a Tupelo, Mississippi home last night.  Brown is being called a "person of interest" and is being held for psychiatric evaluation. Police say they aren't looking for any other suspects.

Neither of the Rae Sremmurd bros have commented on this tragic development. 

We'll update when we have more information.