The Los Angeles County coroner's office on Sunday confirmed the death of the 43-year-old comedian but did not release the official cause. The coroner's office did not say whether Johnson was one of the people who overdosed.
Officers responded to the scene in the 200 block of Carrol Canal in Venice just after 12 a.m. Saturday morning and found three people dead, a spokesperson for the Los Angeles Police Department told ABC7.
A fourth person, a woman, was rushed to a hospital in critical condition, the LAPD spokesperson said. According to TMZ, that person is comedian and model Kate Quigley.
Each of the four individuals had all reportedly suffered overdoses from fentanyl-laced cocaine.
After learning of Johnson's death and Quigley's hospitalization, fans and fellow comedians took to social media to express their condolences and support.
"Very sad to hear about the passing of my buddy Fuquan Johnson," writer-producer Luke Barnett tweeted. "Smiliest, happiest dude, and a local icon in the North Hollywood community, RIP."