Law enforcement officers walk past some evidence markers that were placed on Grove Street after an assistant District Attorney was shot and killed on Thursday, Jan. 31, 2013 in downtown Kaufman, Texas. Kaufman County Assistant District Attorney Mark Hasse was shot and killed early Thursday morning as he was walking from his car to the courthouse. (AP Photo/The Dallas Morning News, David Woo) MANDATORY CREDIT; NO SALES; MAGS OUT; TV OUT; INTERNET USE BY AP MEMBERS ONLY

Associated Press
Law enforcement officers walk past some evidence markers that were placed on Grove Street after an assistant District Attorney was shot and killed on Thursday, Jan. 31, 2013 in downtown Kaufman, Texas. Kaufman County Assistant District Attorney Mark Hasse was shot and killed early Thursday morning as he was walking from his car to the courthouse. (AP Photo/The Dallas Morning News, David Woo) MANDATORY CREDIT; NO SALES; MAGS OUT; TV OUT; INTERNET USE BY AP MEMBERS ONLY
Law enforcement officers walk past some evidence markers that were placed on Grove Street after an assistant District Attorney was shot and killed on Thursday, Jan. 31, 2013 in downtown Kaufman, Texas. Kaufman County Assistant District Attorney Mark Hasse was shot and killed early Thursday morning as he was walking from his car to the courthouse. (AP Photo/The Dallas Morning News, David Woo) MANDATORY CREDIT; NO SALES; MAGS OUT; TV OUT; INTERNET USE BY AP MEMBERS ONLY