noelle velentzas , former roommate , 31-year-old asia siddiqui , were arrested and accused of planning to build an explosive device for attacks in the united states , federal prosecutors .
siddiqui had repeated contact with members of al qaeda in the arabian peninsula , published jihad-themed poems in magazines affiliated with the terror group and possessed propane gas tanks along with instructions on turning them into explosive devices .
one day , velentzas pulled a knife from her bra and showed siddiqui what do with it if attacked .