One of Floyd Mayweather's ex-girlfriend's children discovered their mum unresponsive in her car and called the emergency services.
Josie Harris was found at around 10pm outside her home in California last Tuesday and attempts to resuscitate her were unsuccessful.
Harris, 40, who had three children with the former fighter, is understood not to have killed herself and no drugs were found at the scene.
Police found no suicide note and her cause of death will now be confirmed by a post-mortem, reports TMZ. Harris and Mayweather were together for 15 years until 2010 when he assaulted her in front of their children.
Read more on mirror.co.uk