Ragnarokio
AVATAR NOT BY JIMMU
He couldn't have targeted Seanzie n1, since Raven got his item. Night 2 yours was stolen. N3 Neon claims to have jailed him, but he also claims to have not used any activated abilities n3 either. Mafia would likely claim a stolen item because there would be no downside to it, and it could make whoever took it look bad for not speaking up earlier.
I find it weird to have a 1x item thief that's town, because it doesn't really seem like items do anything? Other than maybe the fact that it would make Raven unsure who to target to get items if town is missing some, but I'm that case it would likely be more than 1x.
Or he could have targeted Seanzie n1 and his action failed because raven got the item. Mafia would likely not claim a stolen item because it gives information to the town and its better for them if the town has less information. It could also make the claim of whoever was responsible stronger, because they now have both me and the mafioso claiming they stole items, one of which was stolen on N2.
1x item thief doesn't make sense alone but it does as one component of a larger role (ie: they can do something with the item after they steal it).