He has not been charged in Pearl 's death , however . Police used ' DNA - matching ' to link Khalid Sheikh Mohammed to Pearl 's killing , report said . Mohammed has said he killed the journalist , but has not been charged . The murder is a result of a three - year investigation .
Police used ' DNA - matching ' to link Khalid Sheikh Mohammed to Pearl 's killing , report said . Mohammed has said he killed the journalist , but has not been charged . The murder is a result of a three - year investigation .