"Not just based on what you observed, no," said Serino.
[Updated at 10:30 a.m. ET]
Serino says he has information that Zimmerman continued to follow Martin after being told not to. He says he based that on the location of Martin's body and the fact that the confrontation happened afterward. But Serino also says there's no tangible evidence against Zimmerman's story that Martin confronted him as he was walking back to his car.
[Updated at 10:28 a.m. ET]
Serino points out on a map where Zimmerman says he was walking that night. He says Zimmerman was close to his car when the operator told him he didn't need to follow Martin.
[Updated at 10:24 a.m. ET]
Serino says it's not illegal to follow or approach someone and ask them what they're doing.
[Updated at 10:22 a.m. ET]
O'Mara asks Serino about the nonemergency call operator asking Zimmerman about Martin's location.
"Does that indicate that he wants him to keep an eye on him?" asked O'Mara.
"Yes sir," said Serino.
[Updated at 10:20 a.m. ET]
Serino says "these [expletive] punks always get away" and "[expletive] punks" was said in a matter-of-fact kind of way. A few days after the shooting, Serino says a tool was found in the bushes behind one of the witness's homes.
"It was a piece of an awning; I believe it was a piece of a window, piece of hardware basically. It looked like a slim jim," said Serino. He explains that this tool is used to break windows.
[Updated at 10:18 a.m. ET]
When Zimmerman said "s**t" on the call, Serino says he saw that as a sign of urgency.
[Updated at 10:16 a.m. ET]
Serino says that he has personally used the expletive Zimmerman used that night (a**holes). He also says it can be used as slang and seemed more like a generalization than something specific.
[Updated at 10:14 a.m. ET]
The prosecutor has finished his redirect examination. Defense attorney O'Mara is now asking more questions of Serino.
[Updated at 10:13 a.m. ET]
"Would you classify the defendant as a skinny kid?" asked de la Rionda.
"No sir," said Zimmerman.
[Updated at 10:10 a.m. ET]
"You felt like he was exaggerating certain parts of it?" asked de la Rionda.