The First quest you receive from Adnan is in Newisle in the house Immam sent you to (224 Docklands Crest). You witness the unspeakable and head down to Adnan after the dialogue from upstairs is over.
Adnan will apologize deeply while you rage in anger not knowing what to do.
Adnan gives you a set of Adnan’s Armor as well as a Remington Gauss Shotgun to allow you to go next door and FINALLY KILL MAYOR STEVENS!
Adnan looks the other way for this one time and allows you to go wild. When arriving next door Mayor Stevens and his security guard will be upstairs.
Mayor Stevens has no weapon but will automatically head your way making it harder to focus the security. Once both are killed return to Adnan to complete the quest.