Looking for a creepypasta

Hello, I have been looking for this creepypasta for a long time now and I hope someone can help me.

So this was a five nights at freddys creepy pasta narrated by someone with a scottish accent (some parts of this story might be a little off as this is how I remember it)

The story starts with the main character (mc will be what I will use for the rest of this) talking to a detective about why he broke into the pizzaria..

Mc explains that his brother went to a school trip to the pizzaria but when he went to pick up his little brother he was not there, and was given some wierd looks from the staff, and was told to leave.. but it just didnt feel right so he talked to his best friend about breaking in and looking for his brother to try find him, which they did (might have been the same day but at night or the next night) they broke in near the security office with a long hall (believe this was a fnaf 2 creepy pasta based on this part that I remember) and while he searched the office for any evidence regarding his brother his best friend went down the hall checking all the party rooms, well after an hour the place went silent, unable to hear his best friend he tried yelling his name but didnt get a response, and then he heard it a just hearable sound of flesh being ripped apart and bones breaking and then he heard his friend in a broken voice, "r-r ru- runn.." and then a louder crack sound was heard and then it went scarily quiet, horrified (I cannot remember if he saw an animatronic or not but I will explain in less detail the next bits I remember)

So after this I know that the mc finds out that they dont attack when the mask is on, but also the detective tells the mc that because he believes that mc is lying that he has sent a squad of armed police into the pizzaria and will wait until after 12am to prove it, the radio springs to life with the cops talking and then you can hear the gun shots and screaming and flesh being ripped apart and then the interview is ended, the next day the detective is a different person who no longer really cares why he broke in but how much he knows about the pizzaria, after mc finishes his story about what happens in the pizzaria, mc is taken into a basement with chika, mc is tied up, and there is a clock showing that it will hit 12am soon, and mc can see the mask he needs to get to, somehow mc manages to get to it but when he turns around chika is no where to be found.

The rest of the story is a bit fuzzy as I have not heard it in a long time but if anyone can help me find it or knows it, it would make my day.

Thank you all for your time and I hope I can get help with this