Published: Jun 08, 2013 3:39 PM EDT

SANFORD, Fla. (AP) - A Florida judge suspended until Monday a hearing to determine if voice- recognition experts will be allowed to testify at George Zimmerman's trial.
    
Circuit Judge Debra Nelson halted the hearing Saturday after an audio expert was unable to testify because he was stuck at an airport.
    
The hearing will resume Monday, and will be held along with the first day of jury selection in Zimmerman's trial. He has been charged with second-degree murder for fatally shooting 17-year-old Trayvon Martin in February 2012.
    
Audio experts have been giving testimony over the past three days on whether screams on 911 calls can be attributed to either Martin or Zimmerman.
    
Defense attorneys don't want voice-recognition experts to testify.

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