In his apartment, agents found a harmless bacteria commonly used as an anthrax simulant and a notebook on anthrax dissemination.
Inside the apartment, agents found Skychefs Detroit Metropolitan Airport identification badges for Mr. Hannan and Mr. Koubriti, who had both once worked there as dishwashers, and a day planner with notations in Arabic.
In the apartment, agents said they found a cache of forged passports and identification papers, more than 100 audiotapes preaching jihad and sketches in a day planner of an air base in Incerlik, Turkey, used by American forces, and a hospital in Amman, Jordan.
A studio flat up for rent in north London is the tiniest apartment the agents letting it have seen.
A tipster led the F.B.I. to the couple's apartment, where agents also found a stash of guns, a hand grenade, handcuffs and about $822,000 in cash hidden in the walls.
The apartments that agents begin leasing this month at 50 North 5th Street, in Williamsburg, Brooklyn, will be among the first rental buildings in the neighborhood to offer the kind of perks that have become increasingly common in the neighborhood's most expensive condominiums.
According to the apartment's listing agent, many of the neighborhood's residents are young professionals.
If someone has expressed interest in an apartment before an agent comes on board, the seller can exclude that person from the exclusive agreement.
It was no larger than Mr. Mason's apartment, so the agent showed them a bigger place in a walk-up building in Boerum Hill.
When I rented an apartment recently, the agent said that if a resident had referred me, he would receive a substantial fee.
