Anthony Riley's death has been ruled a suicide, the Philadelphia Medical Examiner Office confirmed, according to the Associated Press.

Riley, a Philadelphia-based street performer and former contestant on the eighth season of "The Voice," was found dead in the basement of his apartment building in Center City Friday. The Medical Examiner's office confirmed that the 28-year-old performer took his own life by hanging himself.

The singer quickly became a fan-favorite on NBC's "The Voice" with his rendition of James Brown's "I Got You (I Feel Good)" - which prompted all four judges - Blake Shelton, Adam Levine, Christina Aguilera and Pharrell Williams - to immediately turn their chairs and fight for him.

Despite being an early front-runner, Riley had to leave the show early due to substance abuse issues. Philly.com reported that Riley returned to Philadelphia to enter rehab. 

"'The Voice' has been a really great source of support," Riley told Philly.com in March. "At the time, [being on the show] wasn't working for me and I felt like I needed to go, instead of taking on more responsibility than I could handle."

His sister, Halima Miley, told Philly.com that the family has yet to make the arrangements, but will have a memorial service open to public.

"The city was his family," she said.

Following his death, "The Voice" host Carson Daly paid tribute to the late singer on Instagram, posting a photo of the two, with the caption, "Praying for the family and friends of Anthony Riley today. It's a heartbreaking loss. He was incredibly talented and loved to sing. God Bless him."

"We are sad over the passing of Anthony Riley. We offer our deepest condolences to his friends and family during this very difficult time," a representative for "The Voice" said in a statement.