Attorney General Eric Holder: People 'rightly concerned' about Trayvon Martin death Craig Sonner and Hal Uhrig, the former attorneys for George Zimmerman, the neighborhood watch volunteer who fatally shot 17-year-old Trayvon Martin, tell TODAY's Ann Curry why they withdrew as counsel for him. Attorney General Eric Holder told a civil rights group on Wednesday they were "rightly concerned" about the shooting death of Florida teen Trayvon Martin, and if the Justice Department found evidence of a potential federal civil rights crime, officials would take "appropriate action." Holder made his remarks to a gathering of the National Action Network, founded by Rev. Al Sharpton, host of MSNBC PoliticsNation. "I know that many of you are greatly -- and rightly -- concerned about the recent shooting death of 17-year-old Trayvon Martin, a young man whose future has been lost to the ages," he told the group's annual convention. Though the ongoing Justice Department investigation prevented Holder from speaking in detail about the case, he said several officials had traveled to Sanford, Fla. - where Martin was shot by neighborhood watchman George Zimmerman - to meet with the boy's family, the community and local authorities. "If we find evidence of a potential federal criminal civil rights crime, we will take appropriate action," Holder said. His comments come ahead of the release of new information by special prosecutor Angela Corey, who said Tuesday night she would have an announcement in the next 72 hours. Corey is deciding whether or not to press charges against Zimmerman. Earlier Tuesday, the attorneys for George Zimmerman, the Florida community watch volunteer who shot Martin, said they had lost touch with their client and were withdrawing from the case. Craig Sonner and Hal Uhrig said at a news conference outside the Seminole County Courthouse in Sanford that Zimmerman had contacted the special prosecutor against their advice. He is not in the area. I can't disclose where he is," Sonner told TODAY on Wednesday. He's where he won't be found. He is in contact with FDLE (Florida Department of Law Enforcement). If it becomes necessary for him to turn himself in, I believe he'll do it. I don't believe he is going to flee the country. They also expressed concern about Zimmerman's "emotional and physical safety" and said he may be suffering from post-traumatic stress disorder. "Frankly, his actions here recently don't speak of someone who's completely doing very well," Uhrig told TODAY, noting they weren't casting aspersions on their client but letting the public know "he's not a bad guy, he may just be an emotionally beat down guy by this process."