floor. they have found in evidence of a shooting. no one has been shot that they've found thus far. what we know is this all started with a 911 call this morning. someone called and said there was a shooting on the second floor of building 197, which is the same building where the shooting happened a couple of years ago where 12 people were shot and killed. so immediately the mpd, park police, fbi, atf, all of these different law enforcement agencies converged on the area. they have taken this very seriously. evan perez is on the ground here. he says those same people are telling him that they didn't hear any gunshots this time around, which i think is a piece of the puzzle here. >> it is. we've spoken to a few witnesses there. no one we've spoken to says