Lord Infamous, founding member of Three 6 Mafia, died from a heart attack on Friday evening. He was 40 years old.  The rapper, born Ricky Dunigan, passed away during a visit to his mother’s Memphis home, according to Hollywood Reporter .

“He passed away in his sleep from a heart attack,” his half-brother, Three 6 Mafia member DJ Paul, told the website. “He said he was tired, he wanted to sleep. He sat down at the kitchen table, put his head in his arms to lay down … to get some sleep.”

His mother left the house for several hours and found him dead upon her return. Paul was informed of his death by Infamous’ mother and girlfriend.

“He’ll be remembered as a legend, everybody knew him as a legend, an icon,” said DJ Paul. “This year was going to make our twenty-fourth year in rapping together. His music, our music that we made together, was truly before its time.”