 He was also the last journalist killed before the Mexican Senate acted in March 2012 on a Constitutional Amendment that would include journalists in a class of victims whose murder would trigger a federal investigation and criminal status, which journalism and press freedom organizations have advocated to tackle the problem of impunity.Oscar González, who is president of a local press association in Nuevo Leon, demanded authorities investigate the murder completely, examine all motives and bring the murderers to justice.The Inter American Press Association (IAPA) also called for an investigation.