On 2/15/2020 around 2pm EST I ran inside a building in which my friend logged off of yesterday. I went inside the building, lock picked every door closed and waited on the 2nd floor for him to login. While crouched away from any windows or any outside vision I was instantly killed, no one entered the building at all, and all the doors were still locked. My friend then logged in a few minutes after I died, confirmed the doors were still locked and he then encountered a dude that was able to shoot thru the walls and killed him after a few minutes. He was prone, behind a cabinet at the time of him getting killed. I observed him dying thru a discord screen share.