chris pollone has the latest from parkland, florida what can you tell us >> good morning.s parkland, florida wakes up today, this is a changed city. it's been thrust into the national consciousness like so many other american cities over the last couple of decades for one of the worst reasons possible, a massacre inside a school 17 families are saying good-bye to loved ones. another 15 or so have loved ones in the hospital and injured in this shooting. investigators trying to answer a question that may never be answered why. >> reporter: the chaos erupted as classes were about to let t out. police say a former student armed with a semiautomatic rifle pulled a fire alarm and opened fire on unsuspects students. >> after i seen people run, i heard six shots, loud shots. i thought, oh, my god, we have to go. >> reporter: s.w.a.t. teams discovered students barricaded in classrooms where they waited to be led to safety by law enforcement. >> we locked the door, turned off the lights >> reporter: stuchts were >> reporter: students were escorted single file from the building most

nbc news national correspondent chris pollone is live in park land, florida, this morning with more on the investigation and more on those new details. chris. >> reporter: yeah. rosemary, while police here say that in a couple of hours they will release a full timeline going over piece by piece the evidence they have of how this attack unfolded, we are still learning little pieces of details about what happened yesterday. for example, the school superintendent here in broward county says that that accused attacker, that 19-year-old actually took an uber to the schools here in order to carry thought attack. now, investigators are still trying to figure out exactly what the motive was for this attack. >> this morning we're learning more about those harrowing minutes inside marjory stoneman douglas high school in parkland, florida, when a former student armed with a semiautomatic rifle pulled a fire alarm and opened fire on unsuspected teachers and students. >> after i heard those two gunshots then we started running and then he came for our classroom. so he came after he shot those other

live in parkland, florida, i'm chris pollone, back to you. >> thanks for the update. >> everyone has the same shocked reaction. tough comments from warriors head coach steve kerr, also trending this morning. kerr says that america's cycle of gun violence will continue until lawmakers are willing to take a stand are voted in. you can hear more of what he had to say by going to nbcbayarea.com. the story is posted to our home page. i'll try to retweet it as well. how many school shootings in the u.s. since 2013. it's nearly 300. so far this year 18 in 45 days. last year there were more than 60 including the las vegas shooting. congress did not pass a single gun reform law in 2017 but did pass a law limiting a state's ability to enforce concealed carry laws. stay tuned until after "today in the bay" as well. the "today" show will have live coverage from parkland, florida. hear from a wounded student who barely made it out alive. >>> 6:35 right now and happening today students at stanford law school will return to class one day after being evacuated during a hazmat scare. authorities say

. >> chris pollone live for nus parkland florida. thank you, chris. >>> we have a crew in south florida as well gathering new details on this tragedy. you can look for the live reports this afternoon on nbc 10. >>> jessica boyington watching the roads out there. a little bitessy day in terms of the wet weather. >> sure. we're watching route 100 now the northbound side approaching an accident scene that was involving about six vehicles. i just heard word it's clear but you can see some of this delay remains approaching route 30. before you get to 100 if you're heading down the northbound side route 202 two 322 and then head on pots town pike to burke road and end up in the same vicinity after the crash. we had a crash on the schuylkill expressway, so it shouldn't be too bad from blue the vine with spe0s. and bridges we had an earlier opening and it should be back down and the rest of the bridges are clear. only hoursn for this blue crossoing it right? >> yes. >> this year the run will be held on may 6th. if you are not participating, i