Per 
Item Number SCP-4119
Object class Elucid Keter
Special Containment Procedures
SCP-4119 is to be kept inside an airtight room at all times, nothing except for CD are to enter the chamber. There is to be absolutely no Live video surveillance or windows looking into SCP-4119's chamber.
SCP-4119 aka "Nothing" is a "non-existent" SCP where if seen will drive the person mad trying to look for it. Any personal including CD's are to be terminated after the test if exposed to SCP 4119, this is to prevent breaches as the person exposed to SCP-4119 will start "searching for it" although as it seems SCP-4119 is still in containment.
addendum 1
*Site announcement* NTF has reached foundation please stand by for extraction. "Hey, do you know what happened?" "No idea" "did you guys even listen to the briefing?" "ya but-" "if you did then you would know someone went mad" "oh ya." "Shush guys I hear something" over the audio it is heard how DCP 096 is crying "what the is that 096?" "Ah, Shit" "get the bag" "we don't have one" "fuck!" "Wait that doesn't sound like 096… is it oh no." "What is it?" "I must… find it" "you must find what?" "shit dude we are in 4119's" "fuck!" "I MUST FIND IT!!!!" "ah shit shoot, shoot." gunfire is heard from the audio . "Shit! Fuck, what the heck happened!?" "LT are you ok? LT? LT █ █ █ █ █ █ █ are you ok!?" Corporal █ █ █ █ █ turns around "I must find it" "fuck we gotta get out of here LT" "must find" "fuck!" "MUST FIND!" "IM SORRY LT!" Gunfire is again heard in the audio logs *static* "Corporal █ █ █ █ █ are you om what's happening?" "My whole fucking team is dead thats what's happening!" *static* "Alright fall back corporal." "Roger."
End Log
Interview log 1
Begin Log
"Hello, corporal █ █ █ █ █" "hello." "alright corporal, can you tell us what happened exactly?" "alright. So, me and my team where sent to clear up some SCP is the latest breach." "Yes go on." "We where clearing rooms and we entered 4119's chamber, we didnt see the warning so we just entered and… I was guarding the door looking the other way when…" "What happened?" "Private █ █ █ █ █ █ went insane" "ah yes" "and then we shot him I wasnt looking inside the room when that happned because I was bveing blocked by LT █ █ █ █ █ █ █. Saddly LT saw inside the room." "so…" "I killed him but he was blocking the door. Are we done yet?" "yes if that is all you have to say." Corporal █ █ █ █ █ █ left the room
gunshots are heard outside the interview room signalling that corporal killed himself
End Log
