capital to a standstill for five hours today. a man pulling his truck right up to the library of congress, telling police he had a bomb. livestreaming from his truck. an officer at the time saw what appeared to be something in his hand, potentially a detonator, prompting a lockdown and evacuations for hours. after that five-hour standoff, he surrendered to police, and tonight, what they found in that truck. here's our chief justice correspondent pierre thomas. >> reporter: for more than five hours, parts of capitol hill brought to a standstill. multiple law enforcement agencies converging as a man pulls up in front of the u.s. supreme court and library of congress claiming to have a bomb. sniper teams ready to fire. k-9 units deployed. bomb squads rolling down the street. >> i got a bomb in here. i don't want nobody hurt. >> reporter: the suspect, identified as 49-year-old floyd ray roseberry, rambling, streaming it all from his black pickup truck. roseberry confronts an officer.