here is tony kovaleski. >> good evening and welcome to a special edition of nbc bay area news. tonight, we focus on the work of the investigative unit. we begin with campus crime kept quiet. assault, rape, attempted murder. what if it happened at your child's school and you were never told? jenna filed 100 requests with public agencies, school districts and the state. what she found is the system to track dangerous schools isn't working. >> reporter: chilling crime at bay area schools, including attempted murder. none reported to the state because administrators didn't have to. it was 2009 when sources say a student at pioneer high school began harassing a female classmate. he was transferred to another school. within days, sources say he was back on pioneer's campus in a black trench coat. the principal called law enforcement. as the girl walked out of the classroom, he ran toward her and was tackled by police. in his jacket, a 14-inch knife and two suicide notes. the student was tried as a juvenile and convicted of attempted murder. the san jose unified school district kept

tony kovaleski is asking questions of pg&e tonight. also. >> wasn't in the cards. >> gold medal dreams dashed. a former stanford all american athlete does something he has never done before. and the competition may be over but the celebrations are just beginning. we'll go live to london for the final night of the summer games. >> good evening. i'm diane dwyer. we're about two hours from the closing ceremony of the 2012 london olympics. it's been 17 days of world records, celebrations, heartbreaks and controversy. before the athletes could get ready for the ceremony some had to compete on this final day of the games. now more on the competition and what we can expect tonight. hello, phil. >> reporter: hi, diane. it's about a wrap for these 2012 summer games, the competition is now over. so all that's left is a really big party. when these olympics started there were concerns. the weather, security, empty seats. but all of that evaporated by a london fog t country has wrapped itself in olympic pride. thousands of volunteers telegraphing

here is nbc bay area chief investigative reporter tony kovaleski. >> and welcome to a special edition of nbc bay area news. tonight, we focus on the work of the investigative unit. our investigation takes you inside a facility selling ingredients to food producers all over the country. you will see pictures and video that led to a national food recall. you'll hear whistle blowers who came to the investigative unit to suppose the problem. >> he's talking about the secrets inside these concrete walls. >> why are you sitting there now? >> because i can't bear this any more. somebody has to stop what they're doing. stop what their process is because this isn't right. >> he says he quit his job in june in part because his employer failed to properly address a massive rodent infestation. the video takes you inside the 150,000 square foot warehouse located just off highway 880 in fremont. >> go deeper. okay. this is san francisco -- food company from fremont, california. >> and take a close look. more than two dozen pictures illustrate the whistle blowers claims. >> now, what it might do is,

the chief investigator tony kovaleski is here with new information. federal and state investigators have expanded the national food recall. >> after learning of our investigation state investigators shot down fremont bay natural food back on july 11. the state telling us tonight details uncovered in our investigation may now lead to criminal charges. >> have you seen anything like this? >> very rare situation that we see of a facility that has this much rodent activity. >> he's describing what state inspectors found? >> certainly we've seep that there's a lot of products that have evidence of rodent activity in and on them. >> inside this 1 are 50,000 square footwearhouse. leaving and breathing in the facility. not just coming into feed and harboring, living, breathing. >> did what we report portray accurately what we found? >> i believe so. in terms of the rodent activity it was accurate. >> the pictures in the video exposed a troubling trail of mice feces, dead rat and example after example of contaminated food products. >> go deeper. >> natural foo

roth, tony kovaleski with nbc bay area. we've been trying to talk to you about how you're spending rate payer money. he's the ceo and the chairman of the board. published reports show richard roth earns more than $2 million each year. don't you think rate payers have a right to know how you're spending their money? but before he answers that question, let's understand what mr. roth wants from rate payers. the utility has asked for a 44% increase, including 21% next year. one of its reasons for asking for the increase, consumers are apparently conserving too much water, lowering water bills and lowering san jose water's bottom line. >> i rinse, turn the water off. it's all about conserve, conserve, conserve. i would say to them, practice what you reach. >> reporter: tina pays for san jose water bill. >> everything ought to be laid out on the table. what are they hiding? >> reporter: nbc bay area sent this request for records to san jose water. it asks the utility to provide all travel, entertainment and expense reports. we a

i'm tony kovaleski. good night.