"Was there any evidence that that young man was armed?" asked de la Rionda.
"No sir," said Serino.
[Updated at 9:50 a.m. ET]
The prosecutor is now playing part of Zimmerman's interview with police Officer Doris Singleton. Zimmerman says that the neighborhood has had a lot of crime and that his wife saw a residence being broken into. He says he decided to start a neighborhood watch program.
"There's been a few times where I've seen a suspicious person in the neighborhood ... these guys always get away," said Zimmerman.
[Updated at 9:47 a.m. ET]
Serino says the nonemergency line operator, in so many words, asked Zimmerman to not follow Martin.
[Updated at 9:46 a.m. ET]
Prosecutor de la Rionda plays a part of Zimmerman's police call where he says "these [expletive] always get away."
"Is that something you would use in reference to somebody that you're going to invite over to dinner?" asked de la Rionda.
"No sir, I would not," said Serino.
"Does that seem like a friendly comment about somebody else?" asked de la Rionda.
"No sir, it does not," said Serino.
Serino says that calling someone "[expletive] punks" shows ill will and spite.
[Updated at 9:42 a.m. ET]
O'Mara has finished his cross-examination, and prosecutor de la Rionda is asking more questions of Serino.
[Updated at 9:40 a.m. ET]
Zimmerman spoke with Serino several times after their initial interviews. Serino says Zimmerman was always compliant.
[Updated at 9:39 a.m. ET]
Serino says that Zimmerman's injuries didn't seem life threatening and that no injuries were needed for him to look into the case.
[Updated at 9:38 a.m. ET]
Serino says he moved the interview to his desk to play the police calls because he didn't have a computer in the interrogation room.
[Updated at 9:36 a.m. ET]
Defense attorney Mark O'Mara plays Serino's interview with Zimmerman in court, where Serino plays the 911 call made by a neighbor.
"You hear that voice in the background? That's you," said Serino on the audio recording.