cbs' nicole sganga joins us from washington. >> reporter: america's treasury department says it was hacked by cyber criminals backed by the chinese state government and that the hackers managed to steal unclassified documents. a treasury official said attackers breached federal workstations but did not provide details on how many or what sort of documents they may have obtained. in a letter sent to lawmakers monday, a treasury official said the cyber criminals gained entry remotely using a key stolen from a third party vendor to override security and called the attack a major incident. a treasury department spokesperson said it has taken the service offline, adding in a statement that there is no evidence indicating the threat actor has continued access to treasury information. the breach follows a slew of chinese-linked cyber attack, including a hacking campaign by a group nicknamed salt typhoon. hackers targeted at least eight u.s. telecommunications companies, according to u.s. officials, spying on the phone conversations and text messages of more than 100 senior government officials. a

thank you. >>> we want to turn now to cbs news reporter nicole sganga on the phone with some new reporting. nicole what are you hearing? >> reporter: yeah, two law enforcement sources now telling cbs news that a long gun was recovered from the scene of the crash. an indication that the suspect was perhaps using a firearm with a long barrel. and we should say that both fbi and local law enforcement are now working together to search that vehicle for additional weapons. you know, of course, earlier today we learned that investigators found what appeared to be improvised explosive devices a the scene of the crash. they're still trying to determine whether those devices were viable and furthermore if those devices are connected to this suspect. we reported earlier the suspect in the attack is dead. multiple federal law enforcement sources telling cbs news and fbi confirming in a statement we have not yet heard a name. at this point law enforcement and fbi likely running forensic analysis, ensuring a positive identification of the suspect before releasing that name. and that will be part of a l

cbs' nicole sganga has their story. >> reporter: when former president jimmy carter exited the white981, few expected him to return and to stay in this two-bedroom home in plains, georgia. the former president could have lived anywhere, a mansion. >> to me it speaks to his humble heart. he wanted to come back here and just be an average citizen. >> reporter: but as his former special agents in charge, don witham, bill bush, alex parker, and nick steen told us in october protecting the 39th president was anything but average. how many countries did you visit with the former president? >> at that time it was 127. >> reporter: can anyone beat that? >> i can. 140. >> a little over 140. >> reporter: circumventing the globe with his detail. >> he just wants to do good work and stay faithful to that. >> reporter: that drive pushed carter to war zones, defying warnings from intelligence officials. >> still going. >> reporter: but the dangerous assignment of protecting the peacemaker in chief came with its rewards. carter insisted on this photo celebrating his nobel peace prize together with

for more on that, we turn to cbs's nicole sganga. >> reporter: the deadliest vehicle ramming attack iny struck a bustling french quarter, with a street security upgrade underway, but not yet completed. >> whatever the problem was is going to be solved. >> reporter: police positioned a cruiser along bourbon street after the city temporarily removed protective barriers designed to block traffic. >> we did have a car there. we had barriers there. we had officers there. and they still got around. >> reporter: surveillance video shows the truck speeding onto the sidewalk. but the terrorist defeated it. >> reporter: today's tragedy comes after a 2017 city memo raised concerns about a vulnerable bourbon street, with bollards, or security posts routinely malfunctioning. >> the new orleans police department, of course, deemed them inefficient because they did not operate the way that they were intended to do. >> reporter: a deadly car ramming attack on a german christmas market last month prompted the department of homeland security to warn police departments nationwide of the threat of lone of

nicole sganga, cbs news, washington. >>> now to a developing story in las vegas.vestigating a possible terror attack there involving a tesla cybertruck that exploded outside the trump international hotel wednesday morning, kimming the only person inside the vehicle. the cybertruck was filled with gasoline canisters and large firework mortars. the blast is prompting responses from elon musk and the president-elect's son. cbs' andres gutierrez reports. >> reporter: the tesla cybertruck exploded and burst into flames this morning just outside the doors of the trump international hotel. >> like mortars, sounds like a fireworks. >> reporter: people at the hotel and on the sidewalk had to scramble to safety as fire crews tried to douse the flames. >> we saw that smoke start showing from the vehicle, and then a large explosion from the truck occurs. >> reporter: police say the person in the cybertruck died in the blast, and at least seven people suffered minor injuries. >> like firewood. it was popping sound and banging sound and a lot of blocks fly. >> reporter: police

reporter nicole sganga has more.>surveillance >>video captured the moment when a tesla cybertruck exploded outside president elect donald trump's las vegas hotel, >>>>sitting in the port of cashier for about 15 seconds before it exploded. police >>>>say the back of the truck was filled with accelerants. those >>>>are gasoline canisters. they are camp fuel canisters and large firework mortars. the >>>>suspect has been identified as matthew allen berger, an active duty army member stationed in germany but on leave at his home in colorado springs, colorado. cbs news spoke with two relatives who confirmed that berger had rented a cybertruck, and they say his wife had not heard from him in several days. authorities are investigating to see if there's any connection between the las vegas explosion and the truck attack in new orleans. >>>>the law enforcement and intelligence community are continuing to look for any connections, associations or coconspirators. >>>>both attacks had some overlapping similarities. in addition t

. >> major: nicole sganga, thank you very much. correspondent kati weis was there on the scene in the moments after the attack. here is her account of the horrifying aftermath. >> reporter: as a new to new orleans resident, i went out to historic bourbon street with my husband to celebrate the new year. never imagining that happy would turn to horror so quickly. we first heard the commotion and immediately stepped into a bar to take cover. i watched from a second-story window as first responders ran toward the danger. a street previously jammed with people then only filled with the injured and dead. >> there's 12 people dead. >> reporter: partygoers were now prisoners at different bars. i waited with dozens of others, still not knowing what exactly happened. >> there was a car that went through the crowd? >> hit a bunch of people. hit that, got out, started shooting. >> reporter: i met jessica from mississippi, who comes here every year for her anniversary, she said her husband was hit by the truck. >> right there in front of the d

nicole sganga got a bird's-eye view of how prepared security officials are after months of planning. >> reporter: from only 150 feet in the air, pilots dodge buildings. >> tower on your left. >> reporter: flying in a grid over the national mall to scan for radiological or nuclear irregularities, threats like dirty bombs. so you're trying to create a blueprint of what the radiation in washington, d.c. looks like ahead of the inauguration? >> correct. >> reporter: department of energy scientist jacqueline brandon calls this low-flying helicopter one of just two of its kind, her office. >> if we find a radiological irregularity, we'll investigate it even further. >> reporter: highly sensitive technology sets off alarms in the air. >> that's an alarm? >> that is an alarm. it's a slight variation in our spectra is what it's saying. >> reporter: on the ground, a mission led and meticulously rehearsed by the u.s. secret service at its training facility in maryland. this where we're standing is pennsylvania avenue? >> today it's pennsylvania av avenue. tomorrow it will become a speed racetra