Brown Jr., the half-brother of Bobbi Kristina Brown who died in 2015, was 28.
Officers with the Los Angeles Police Department responded to a call for a medical emergency on Wednesday around 1:50 p.m., spokesman Jeff Lee confirmed to CNN.
Brown Jr. was pronounced dead at the scene. No foul play is suspected, Lee added.
Brown Jr. was "not feeling well a couple days before his death" and had experienced flu-like symptoms, according to a statement from Bobby Brown's attorney.
"Please keep my family in your prayers at this time," Brown said in a statement. "Losing my son at this point in our lives has devastated my family. There are no words to explain the pain."
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