Questioning for an Food and Drug Administration inspector lasted a total of 13 hours in the federal trial of three people charged with covering up contamination at a Georgia peanut plant linked to a deadly salmonella outbreak.
Defense attorneys said FDA inspections of the property were biased, and had interference from criminal investigators.
In questioning of FDA inspector Janet Gray Thursday, defense attorneys pressed her about adding information to inspection documents revealed in emails.
Prosecutors focused on whether or not Quality Control Manager Mary Wilkerson knowingly hid information from reports to the FDA.
Former Peanut Corporation of America (PCA) owner Stewart Parnell, his food broker brother Michael Parnell, and Georgia plant quality assurance manager Mary Wilkerson were indicted in February 2013, charged with shipping salmonella tainted peanuts and covering up lab results showing the nuts tested positive for the bacteria.
Nine people died and more than 700 were sickened in the outbreak that happened five years ago.