Prosecutors say they want more time to review the latest doctor's report and to decide how much weight to give the report.
RELATED: Man accused of killing Nia Wilson found competent to stand trial
A doctor decided two weeks ago Cowell is mentally competent to stand trial.
This is the third doctor to examine Cowell. Another ruled he is not competent and a third could not render an opinion.
Wilson's relatives have said they believe he is putting on an act. Cowell's attorney has questioned his mental state.
Cowell was scheduled to enter a plea on Friday but the hearing was postponed until Aug. 19.
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