A judge has ruled that George Zimmerman's attorneys can view Trayvon Martin's records from middle and high school.
Judge Debra Nelson also granted the defense access to the 17-year-old's posts on Twitter and Facebook, as well as tweets from a girl Martin was on the phone with shortly before his death.
Zimmerman sat in silence during the entire hearing Friday afternoon.
It was the first time he was seen in public since his release from the Seminole County Jail in July -- and the media didn't even recognize him at first, as he has put on a significant amount of weight in the last three months.
During Friday's hearing, defense attorney Mark O'Mara filed an emergency motion to make sure no one was talking to witnesses before they could be deposed.
The judge said she would make a decision on that next week. The next hearing was scheduled for Friday, Oct. 26, at 1:30 p.m.
Nelson, the third judge to preside over the case, set the tone right away in court Friday: She's a stern, no-nonsense judge.
She ruled swiftly on allowing the defense to see Trayvon Martin's school and social media records, which O'Mara said the defense will use to try and prove the teen had a reputation of violence.
The defense was also granted access to Twitter posts made by "Witness No. 8," the teenage girl Martin was talking to the night he was killed.
Zimmerman's attorney said those tweets could show she didn't tell the truth about where she was and what she was posting.
"What I see online -- what I presume to be accurate -- contests those suggestions," O'Mara said.
"There's been no proof that this person actively tweeted, or whatever word is used to describe such a thing," said prosecutor Bernie de la Rionda, who argued it could have been anyone posting from the girl's account.
While the defense now has access to these records -- and the prosecution will get to see Zimmerman's medical records -- Judge Nelson will still have to decide if it all that evidence would be allowed to be shown to a jury.
Live Blog: Updates from the courtroom
3:15 p.m.
Confirmed: George Zimmerman wore a bulletproof vest to the courthouse.
3:01 p.m.
Judge Nelson will look at the gag order during the Oct. 26 hearing. Court in recess.
2:55 p.m.
Judge Nelson rules: Motion just handed to her in open court will not be sealed.
Zimmerman, himself, has been sitting silently at the defense table since the hearing began.
Next hearing scheduled for Friday, Oct. 26, at 1:30 p.m.
2:50 p.m.
The motion is a gag order to make sure key players aren't talking about the case.
O'Mara says his motion is intended to make sure no one talks to witnesses until they are deposed.
2:45 p.m.
Judge Nelson reviewing a motion for an emergency order for protection for George Zimmerman.
The state objects to the motion, asking for it to be sealed until they can review it.
2:40 p.m.
Judge Nelson tells Benjamin Crump to provide a list of people who were in the room listening to the interview with Witness No. 8.
Crump has 10 days to get the names to the court. Those names will be added to the list of witnesses deposed.
The defense wants to know how the state got the tape.
2:35 p.m.
Judge Nelson asks for "disparaging remarks" between sides to stop.
Benjamin Crump, the Martin family's attorney, approaches the stand to testify on an interview he recorded with Witness No. 9. The state says they have the "best copy" of the recording, but it is still difficult to hear what the witness is saying, as the interview was conducted over a speaker phone.
2:30 p.m.
The state says it does not want witnesses' addresses released to the defense. Prosecutors say they will make sure witnesses are there for a deposition, but are worried about witnesses' safety.
Judge rules: Witnesses should not be required to give their addresses in depositions. Prosecutors will bring witnesses to depositions.
Now discussing a matter concerning "Witness No. 8," who is the girl Trayvon Martin was on the phone with the night he died. She is being called a "key witness."
2:20 p.m.
Judge Nelson now hearing arguments on FDLE reports requested by the state.
Nelson hands over a full interview disc from "Witness No. 9" to both the state and defense.
Defense asks for pictures from the state. Judge Nelson sternly tells O'Mara: "They cannot give you what they do not have."
2:12 p.m.
Judge Nelson rules: Zimmerman's medical records will be reviewed and released.
Nelson adds she will look at the records first to decide if they are admissible in court.
2:05 p.m.
O'Mara says the girl on the phone with Martin was "so devastated" she did not attend his service, but alleges her tweets contest that. He wants access to her tweets for the purpose of impeaching her as a witness.
The state argued there is no way to prove who was using her Twitter account.
Judge Nelson rules: Defense can also see tweets from Trayvon Martin's friend.
State now arguing for the release of George Zimmerman's medical records.
2 p.m.
Judge Nelson rules: Defense will get access to Trayvon Martin's Twitter and Facebook posts.
Nelson has been stern with attorneys, saying: "I don't need this back-and-forth between the two of you. It will stop now."
1:55 p.m.
O'Mara now arguing for access to social media posts, arguing that social media is not private, and Twitter users know their tweets are open to the public.
O'Mara argues Trayvon Martin's social media records are relevant, because he wants to show what the teen was posting, and what videos he had been watching around the time of his death.
O'Mara also asks to see tweets from the girl Trayvon Martin was on the phone with shortly before he was shot and killed.
1:45 p.m.
Judge Nelson says a subpoena will be issued for Trayvon Martin's school records.
Nelson adds that school records are privileged information, and will not be released to the public, though the defense will be allowed to view them.
1:40 p.m.
State prosecutors say they want records sealed and sent right to court. Media lawyers say that is not legal.
Zimmerman's attorney, Mark O'Mara, requests access to Trayvon Martin's records from middle and high school, and posts on Facebook and Twitter.
1:30 p.m.
Hearing is under way. This is the first time the public is hearing from Judge Debra Nelson since she took over the case. Earlier this week, she set a tentative trial date for June 10, 2013.
1:20 p.m.
Trayvon Martin's parents are in court, as is George Zimmerman's brother, Robert, who flew in for the hearing.
1:10 p.m.
Media did not recognize George Zimmerman at first when he arrived at the courthouse. He has put on a significant amount of weight and has longer hair since his release from jail in July.
Parents: Trayvon's school records irrelevant
Trayvon Martin's family said they are outraged that George Zimmerman's lawyers want to see their son's school records.
Friday morning, before the hearing, the teen's parents said Trayvon's school records were not relevant, stressing that their son was the victim in February's shooting.
"It is wrong to attack the victim, to make a dead child look like perpetrator," said Tracy Martin, Trayvon's father.
In a statement released earlier in October, the Martin family said the school records were "completely irrelevant to George Zimmerman's decision to get out of his car to profile, pursue, and shoot their son in the heart on February 26, 2012."