Both?

[Skulduggery can just imagine the most innocent smile on Sokka's face when he's called out about it.]

I mean, whoever is behind it got someone I care a lot about, and that's not okay, so I'm already out hoping to find whomever is behind it. But right now, I think the number of people I trust to be not the culprit is way smaller than the list of people I would assume could be the culprit.