Poor muk... though I am impressed a pokemon consisting of nothing but liquid(ish) sludge was killed by mutilation.

Better follow the leads though. I'll interview (81) Finichi the Garbador, asking her about her relationship with Krum, as well as what she knows about Krum's relationship with his co-workers/anyone he'd had memorable interaction with. Also mention the words "SHOULD HAVE SAID YES" that were by his death sight, asking if she knows what it refers to.