Lawyer: No decision on Zimmerman testimony as jury selection begins George Zimmerman. UPI/ Gary Green/Pool SANFORD, Fla., June 10 (UPI) -- George Zimmerman's lawyer says he hasn't decided if his client will testify in his murder trial for killing unarmed black Florida teenager Trayvon Martin. "That is a call we always make midway through," Mark O'Mara told The New York Times as jury selection was to begin Monday in the Seminole County Courthouse in Sanford, 25 miles north of Orlando. If jurors hear the bulk of Zimmerman's statements to police, O'Mara said he might choose to keep Zimmerman off the stand to avoid exposing him to cross-examination. The jury-selection process is likely to take two to three weeks and the rest of the trial another two to three weeks, O'Mara has estimated. Judge Debra Nelson has said due to the extensive media coverage, she will withhold the six jurors' names once they're chosen but not sequester them. About 200 journalists are registered to cover the racially charged trial in the city of 53,500, where almost 1-in-3 residents is African-American and more than 1-in-5 is Hispanic or Latino, the 2010 U.S. Census indicates. Zimmerman's voter registration record lists him as Hispanic. The county demographics, from which the jury pool will be chosen, are different from Sanford's. They show Seminole as 11 percent black, or about 1-in-10, and 17 percent Hispanic. Nelson ordered the clerk of courts to summon 500 potential jurors. About 100 to 200 potential jurors are expected in court Monday, with 100 more each day after that until the panel is seated, Clerk of Courts Maryanne Morse told the Orlando Sentinel. Zimmerman, 29, is charged with second-degree murder in the shooting death of Martin, 17, in Sanford Feb. 26, 2012. He faces up to life in prison if convicted as charged. The neighborhood watch volunteer at the time of the shooting has maintained he acted in self-defense after being attacked and beaten by Martin, while the prosecution contends Zimmerman targeted and pursued Martin because he was black. The two encountered each other in a gated townhouse community as the teenager returned from a convenience store after buying a soft drink and a bag of Skittles candy. Martin, of Miami Gardens, 15 miles north of Miami, was visiting his father while suspended from high school. Zimmerman, who was not arrested until six weeks after the shooting, has maintained he shot his 9mm semiautomatic gun in self-defense after Martin attacked him. Prosecutors from the 4th Judicial Circuit of Florida argue Zimmerman was a reckless vigilante who provoked the fatal confrontation by profiling Martin, who was walking back to his father's home, minding his own business. No one still alive, other than Zimmerman, saw the fight unfold. But a young woman Martin was talking with on the phone moments before he was killed has said in statements Martin sounded scared when they spoke. She has said she heard Martin ask Zimmerman why he was following him. She said she then heard something like, "get off, get off," just before the call ended abruptly.