A molecular biologist could face a prison sentence for criticizing a report on transgenic gene spread. Ernesto Bustamante Donayre, vice president of the Peruvian College of Biologists, a professional organization, stands accused of defamation, a criminal offense, which in Peru can carry a prison term or fine. What triggered the suit was his public criticism of a report prepared by Antonietta Ornella Gutiérrez Rosati, a biologist at the La Molina National Agricultural University in Lima, identifying a P34S promoter and NK603 and BT11 transgenes in 14 of 42 maize samples from the Barranca region. Gutiérrez sent summaries of her findings to both the National Agricultural Research Institute and El Comercio newspaper in 2007 calling for a moratorium on transgenic crops until biosafety regulations are in place to prevent the spread to human food. Bustamante, a frequent contributor to radio and print, with no financial links to crop companies, described the alleged detection of three simultaneous transgenic events from two firms as “absurdly improbable” in his newspaper column and called for her claims to be peer reviewed.