Jul 12, 2013 9:23 AM by Garrett Boyd
SANFORD, Fla. (AP) - George Zimmerman's defense attorneys have begun their closing arguments at his second-degree murder trial in Florida.
Defense attorney Mark O'Mara on Friday began his last effort to convince six jurors that Zimmerman acted in self-defense when he fatally shot 17-year-old Trayvon Martin last year.
The jurors could begin deliberating later in the day.
A day earlier, prosecutors made the case that Zimmerman assumed Martin was a criminal up to no go when he confronted him in his neighborhood. A scuffle followed, and Zimmerman fired his gun.
Zimmerman has pleaded not guilty to second-degree murder, claiming Martin was slamming his head into a sidewalk when he shot the Miami teen.