times" he told a university administrator months ago that 20-year-old damon thompson sent him several e-mails accusing other students and even frank himself of taunting him during an exam. he said other teachers had similar e-mails from thompson. thompson is accused of stabbing another student in the throat during a chemistry lab. other students watched in horror on thursday as blood gushed from the 20-year-old woman's neck. her family says she is expected to recover. >>> an early surprise in colorado led to a big headache for a lot of people. take a look. can you see what caused this massive pileup? some of the drivers didn't, and that is where the problem started. >>> this was the scene -- this fight turned into an all-out gun battle in toledo, ohio. people had already scrambled out the door. unbelievable. a few minutes later a second camera captured several people outside firing into the bar. amazingly, no one was struck, even though as many as 20 shots were fired. police are trying to identify the gunman and figure out what started the shootout. >>> a teacher who grabbed the wheel

professor steven frank says 10 months ago, he told a university administrator about 20-year-old damon thompson after thompson accused frank of taunting him. thompson is accused of stabbing another student in the throat in a chemistry lab. >>> you think you've heard everything about new york? there are lots of hidden spots worth checking out. one of our i-reporter has a few for new today's look at "my city, my secret." >> hi, i'm julio, we're in new york city. and i want to show you some of my best-kept secrets of new york. we're inside the cathedral church of st. john of the vine. this is a hidden gem in new york. people don't know about the musical programs, the outreach to the community the cathedral offers and just the beauty of it. we're here at the hudson river parks pier 54. it's actually the remains of what's left of a magnificent pier. for me, it's the place where i end my bike ride on that little bench there, and it also has a very historical significance, because this is where they brought the survivors of "titanic" when they came back. welcome to coney island, usa, this is where new

professor steven frank says 10 months ago he told a university administrator about 20-year-old damon thompson after thompson accused frank of taunting him. thompson is accused of stabbing another student in a throat at a chemistry lab. >>> some new york muslims say they're being singled out in a terrorist investigation. they held a protest as investigators look into nagibullah zazi. they accuse law enforcement of racial profiling and claim their neighborhood has been disrupted by police raids. >> people are scared to go to mosque. i was yesterday in the mosque for friday prayer. we are missing about two, three lines, and plus the racial profiling that everybody has been questioned by the color of their skin, by the way they look, and especially in our building. >> that man also says he can't find a job because he was under police surveillance. zazi is expected of planning a terrorist attack in new york. he pleaded not guilty. >>> one woman is proving that age shouldn't keep you from doing what you want to do. that's how she's reaching new heights and teaching others how to live it up, too. 

obviously in some cases damon thompson paranoid, of this professor, other students. could you sense from hearing that, that violence would ensue at some point? >> there's no way to know for sure. he's right, it's the university's responsibility to make sure that even students who have mental disorders who are capable of coming to class be allowed to go to class. and it's also true that you can't force someone to go to the counseling center who has not made an immediate threat to someone who can be identified, either against himself or against someone else. it would be pure conjecture to say he was posing a threat to someone based on the e-mails that he sent, and whoa might have been auditory hallucinations or paranoid ideations. so their hands are tied in that case. >> we've got about 45 seconds. we'll pick it up on the other side, andrew. what can ucla do? has their policy changed since virginia tech and concerns about cho? and now we have it in this case? >> one of the things is that because of hipaa, which is the federal privacy laws regarding medical information,

damon thompson, do you know him at all? >> no. i teach biochemistry. he's not even in the class i teach or t.a. for so -- >> -- you don't really know their relationship or anything like that. >> no, i don't. i don't. >> okay. >> i do know they're part of the same lab, both in the organic chemistry lab. >> wendy, motive unclear. what do you see here? relationship gone bad or who knows? >> no, i -- you know, obviously there was a relationship or something happened that triggered something in here whether a hallucination or delusion and young adults especially college life a time when all kinds of mental disorders can come to true fruition and kick in i'm thinking of schizophrenia, for instance. so, we don't know the background of the guy or what happened here. i think the bigger story, actually the psychology of crowd dynamics. can you imagine 30 people stood there frozen and nobody did anything? >> wow. >> fascinating how that works. >> it certainly is. guys, we have to run. we'll continue to follow this as we find out more information. wendy, kri ril,

professor steven frank says 10 months ago, he told a university administrator about 20-year-old damon thompsonfter thompson accused frank of taunting him. thompson is accused of stabbing another student in the throat in a chemistry lab. >>> some new york muslims say they're being singled out in a terrorist investigation. they held a protest yesterday as investigators look into najibullah zazi. they accuse law enforcement of racial profiling and claim their neighborhood has been disrupted by police raids. >> people are scared to go to mosque. i was yesterday in the mosque for friday prayer. we are missing about two, three lines, and plus the racial profiling, that everybody has been questioned by the color of their skin, by the way they look, and especially in our building. >> that man also says he can't find a job because he was under police surveillance. zazi is suspected of planning a terrorist attack in new york. he pleaded not guilty. >>> one woman is proving that age shouldn't keep you from doing what you want to do. that's how she's reaching new heights and teaching others how to live it