Palm Beach Gardens police Major Paul Rogers confirmed on Thursday Williams was involved in a crash on June 9.
He said the crash is under investigation but would not give further details or release the accident report.
TMZ cited a police report that said a passenger in the other vehicle later died from his injuries.
Williams' attorney said in a statement that she expressed "her deepest condolences to the family who lost a loved one."
The attorney, Malcolm Cunningham, said Williams had entered an intersection while the light was green and was going 5 miles per hour (8 kilometres per hour) when the other vehicle crashed into hers.
Mr Cunningham said Williams was not ticketed or charged.
AP