Bobby Brown Jr., the son of

singer Bobby Brown, died from the combined effects of alcohol, cocaine and the

opioid fentanyl, an autopsy report released Monday said.

Brown Jr. was

found dead in his Los Angeles home at age 28 on Nov. 18. At the time

authorities said only that they believed no foul play was involved.

Brown Jr.’s

girlfriend, who had last seen him alive that morning, found him unresponsive on

his bedroom floor and called paramedics, who declared him dead, the report

says.

He had a history

of drug and alcohol use and his death was ruled an accident, the report says.

Brown Jr.’s mother was Kim

Ward, with whom Brown had been in a long relationship.

The elder Brown

sprang to fame with New Edition in the early 1980s, and was one of the biggest

solo stars in music during the late 80s and 90s.

In 2012, Bobby

Brown’s ex-wife, Whitney Houston, was found dead after drowning in a Beverly

Hills hotel room bathtub. Coroner’s officials said heart disease and cocaine

were contributing factors. She was 48.

In 2015, their

daughter, Bobbi Kristina Brown, was found face-down in a bathtub at her

suburban Atlanta home. She was in a coma for six months before dying at age 22

of causes investigators couldn’t pinpoint. An autopsy showed that she had

morphine, cocaine, alcohol and prescription drugs in her body.

Her ex-partner,

Nick Gordon, was found liable for her death in a lawsuit, but was never

criminally charged. Gordon died last year at age 30.