Trayvon Martin case: special prosecutor decides not to use grand jury--'There will be no further comment from this office.'09 Apr 2012 The special prosecutor investigating Trayvon Martin's death has decided against using a grand jury to determine whether any charges should be brought in connection with the Florida teenager's killing. A statement released by Angela Corey's office on Monday did not give a reason for the decision. "From the moment she was assigned, Corey noted she may not need a grand jury," the statement said. Martin, 17, was shot dead in Sanford, Florida, on 26 February by a self-declared neighbourhood watch captain, George Zimmerman.