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A police report says the woman, identified as 41-year-old Chautele Cooksey, went to Bosh's home Monday morning where she suddenly lost consciousness.
Miami Beach Police spokeswoman Vivian Hernandez said the department will conduct its standard death investigation, but there are no immediate signs of foul play.
The woman initially appeared to be well but suddenly collapsed. Fire rescue workers responded and transported the unconscious woman to a Mount Sinai, where she died Monday night.
The report says a friend of the victim told officials she had survived cancer about a year ago. The cause of the woman's collapse and eventual death weren't in the report.