What happens if the jury cannot reach a verdict in George Zimmerman trial?

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SANFORD, Fla. —

If the jury deliberating in George Zimmerman's second-degree murder trial tells Judge Debra Nelson it cannot reach a verdict, she will read them an Allen Charge.

What's an Allen Charge? An Allen Charge is a strongly worded reminder given by a judge to a jury that is hung or divided, and it can only be read once during deliberations.

Ultimately, the jury decides how long it will continue deliberations. If jurors still cannot reach a verdict, Nelson will declare a mistrial and the state will be free to try the case with a new jury.