A simple piece of paper is left at the bar of the Last Stand for Rak to find and give to Hasham.

Did anyone get to you about the report you made against Rillian Ty'fer for casting in the open? If not, keep at it. There are other reasons to pursue him. The Spellguard, Watch, and Council will likely be interested in his necromancy. And even more importantly, they will be especially interested in him trying to work with Nathaniel Savon--after his exile and the bounty placed upon him, mind you--so that he could get in contact with the Drow and the Scholar everyone is looking for.