general. >> can you tell us where in maryland he's a resident? >> no. >> when are you able to confirm his identity? >> very soon. very soon. >> was this a sporting shotgun, a tactical shotgun, and can you provide information about the smoke grenades, if there were commercially available or -- >> i don't have that information. they were shot on the first floor. >> deputy chief, there's talk about the gunman trying to hide his identity in certain ways, maybe with his fingerprints burned off and things. can you confirm any of that? >> i cannot. it's the first i heard facial recognition and the first i've heard anything about fingerprints. we have no verification on either. >> were there any threats on social media or directly sent to -- >> we know there were threats