welcome back. we're getting new information about the weapons used in yesterday's shooting. >> pamela brown joins us again. you've been reporting on this all morning long. it's confusing what the gunman had and didn't have on him. bring us up-to-date. >> response teams are proing the scenes, looking through the shell casings, trying to figure out what weapons were used in the shooting and what kind of weapons they were. initially, there were reports that the gunman was armd with an ar-15. now there's question about whether he was armd with an ar-15 or whether there was one even at the scene of this shooting. it's believed that the suspect walked in with a shotgun and two pistols that were recovered. right now, authorities are trying to figure out whether the pistols belonged to armed guards at the building or whether the gunman somehow acquired the pistol afs he walked into the building. still some confusion there.