Rae Sremmurd's Half-Brother Being Held in Custody After Stepdad Shot and Killed in Mississippi

The stepfather of hip-hop duo Rae Sremmurd — made up of brothers Swae Lee and Slim Jxmmi — was shot dead in Tupelo, Mississippi, on Monday night, PEOPLE confirms.

Lee County Coroner Carolyn Green confirms to PEOPLE that 62-year-old Floyd Sullivan, who raised Swae Lee, 26, and Slim Jxmmi, 28 (born Khalif Malik Ibn Shamon Brown and Aaquil Iben Shamon Brown, respectively) since they were preteens, died at approximately 9:30 p.m. on Monday from gunshot wounds. There were no other reported injuries. His death is being investigated as a homicide.

The Tupelo Police Department revealed to PEOPLE on Tuesday that Sullivan’s son, who was announced as a person of interest following the fatal shooting and was “being detained on a psychological hold,” was “released from a local psychological care facility and immediately arrested for murder.”

Police named the suspect as Jamil Ali Sullivan, 19. He was taken into custody “without incident” and transported to the Lee County Sheriff’s Department, police said.

It is not immediately clear if the 19-year-old has legal representation.

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Sullivan had moved to Mississippi with Swae Lee and Slim Jxmmi’s mother, Bernadette, when the boys were in middle school. In a 2016 interview with Fader, Swae Lee said that Sullivan — who both he and Slim Jxmmi called “dad” — sold drugs to support the family.

“He was doing whatever he had to do. Keeping us in school, getting us to school,” said Swae Lee, who is currently nominated for two Grammy Awards for his Post Malone collaboration, “Sunflower.”

A representative for Swae Lee and Slim Jxmmi did not immediately respond to PEOPLE’s request for comment, but Lee tweeted a message on Tuesday night.

“I pray this world let’s me keep some compassion,” he wrote.

TMZ was first to report the news of Sullivan’s death.