Nightly News   |  July 13, 2013

Zimmerman jury holds second day of deliberations

The jury in the George Zimmerman trial deliberated for a second day Saturday with no indication of how long they might take to reach a verdict in the death of Trayvon Martin. NBC’s Ron Mott reports.

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>>> good evening. it's been more than 24 hours since a jury of six women was sent behind closed doors to decide a murder trial that's riveted much of this country for the last several weeks. the shooting death of an unarmed teenager by a neighborhood watch volunteer in sanford, florida. tonight with no verdict the suspense in this emotional michellely -- emotionally charged case is building inside and outside the courthouse and so are tensions. the question to be answered whether george zimmerman shot and killed trayvon martin in an act of self-defense. the prosecution contends it was an act of second-degree murder. we'll get some legal perspective on this in a moment but first ron mott is outside of the courthouse.

>> reporter: good evening. this jury has been together almost three weeks now. they have been deliberating for about 13 hours and counting and tonight they asked the court to clarify the instruction for manslaughter.

>> your verdict finding george zimmerman either guilty or not guilty must be unanimous.

>> reporter: after 56 witnesses, 12 days of testimony, and an assortment of evidence to digest, a chunk of concrete, a foam dummy, the six women jury continued deliberating the fate of george zimmerman . among them five mothers. the three options, guilty of second-degree murder, guilty of manslaughter or not guilty, a verdict that may hinge on how the jury resolves key issues. who cried out for help.

>> trayvon benjamin martin .

>> my son george .

>> reporter: the position of zimmerman 's holster.

>> he's saying armpit. how does he get the gun out.

>> reporter: injuries. how severe were they. his description of trayvon martin in a call to police.

>> [ bleep ]

>> so much of this case is documentary evidence . via video, audiotape, photographs. jurors like that they prefer that over witness testimony.

>> reporter: throughout the trial defense attorneys didn't stray off their central argument that zimmerman fired in self-defense. after being attacked. he's pleaded not guilty to second-degree murder.

>> i almost wish the verdict had guilty, not guilty and completely innocent. because i would ask you to check that one.

>> reporter: by contrast prosecutors sought to expose what they called inconsistencies or lies in zimmerman 's account of the shooting, his motives, his movements.

>> i submit to you that trayvon benjamin martin is entitled to the truth. and it didn't come the defendant's mouth. it didn't. he told so many lies. that's why we're here.

>> reporter: the jury heard a range of witnesses from the woman on the phone with martin during the encounter.

>> i heard trayvon saying get off, get off.

>> reporter: to the lead investigator, one of the first to interview zimmerman .

>> you said following him is not illegally improper correct?

>> many people thought the jury would come back quickly with a acquittal. that's not happened. we're not past the point where we can say it was a quick decision.

>> reporter: supporters of trayvon martin and george zimmerman have gathered outside of the courtroom here all day. they have been largely peaceful but at one point there was a brief shouting match that required sheriffs deputies to step in. no injuries and no arrests.