 Investigators have relied solely on the suspect's confession to incriminate him; the DNA and fingerprint samples collected at the murder scene did not match the suspect's according to sources close to Committee to Protect Journalists.The Committee to Protect Journalists, "Proceso" magazine, and several journalists and press freedom organizations have complained about irregularities in the investigation and question the legitimacy of the whole case.They believe that their colleague's murder was part of a campaign of intimidation against those who investigate alleged links between drug traffickers and politicians in the state of Veracruz.