Emergency crews respond to reports of helicopter crash off Key Biscayne, Miami officials say

Crews in Miami-Dade are responding to reports of a helicopter crash off Key Biscayne, Miami officials say.Few details have been released, but the crash occurred after 11 a.m.It's unknown what what cause the helicopter to crash, of if any injuries were reported.The Miami-Dade Sheriff's Office as since taken over the investigation, officials say.No other details were released.CBS News Miami is working to gather more information and will provide updates when they're available.