The case of the sea hag was handed over to Rowan since he was responsible for bringing it to the attention of the Sanguine.
The anti mage was in a room that was used for interrogating criminals. The walls were reinforced with runes that could withstand most magical attacks. With so many anti mages going about their day in the Sanguine Headquarters, there wasn't much worry about, especially not escaping criminals.
A white table held a few sheets of paper, an ink well and a quill. Roga was glowering at one end of the table. Rowan sat at the other end, going through the lines of writing on a sheet of paper.
What the anti mage had in his hand was an official document that would sign away Roga's diplomatic immunity. He had it drafted post-haste the night before. Another sheet of paper on the table contained the confessions of the old man. Roga was to be charged with a long list of crimes that would put him away till the end of his life.