Article Photos: Police questioning of Zimmerman grew more pointed 3/24

FILE - This June 24, 2013 file photo, Tracy Martin, left, and Sybrina Fulton, center, parents of slain teen Trayvon Martin, speak in a news conference prior to opening arguments in the trial of George Zimmerman at the Seminole County Courthouse in Sanford, Fla. Zimmerman has been charged with second-degree murder for the 2012 shooting death of Trayvon Martin. (AP Photo/John Raoux)