This witness statement sounded legitimate on the audio. The bit about overhearing their radio transmissions regarding a #2 shooter and blood found in a bathroom was quite intriguing. Caught my attention.
He does sound credible and that bit about the blood in the bathroom is intriguing.
To me it sounded like those cops were looking at him as a possible patsy. As in, they need someone to hang the “second shooter” accusation on because they know, or fear, that soon it will be impossible to hide that there was.
My speculation only.