As part of a longterm, undercover FBI operation, federal authorities arrested two women allegedly planning to detonate a bomb in New York City on behalf of the Islamic State, ABC News reports.

According to the New York Times, the women, Noelle Velentzas, 28, and Asia Siddiqui, 31, are roommates living in Queens, and were apparently plotting to build an IED for an undisclosed location in New York.

In the criminal complaint, Siddiqui—apparently the editor of Inspire, the online magazine published by al-Qaeda in the Arabian Peninsula—is noted as “in possession of multiple propane gas tanks, as well as instructions for how to transform propane tanks into explosive devices.” The complaint also details an anecdote in which Velentzas pulls a knife from her bra, mimes stabbing someone, and tells Siddiqui, “Why can’t we be some real bad bitches?”

Investigators have not said whether the weapon was ever actually assembled, but told ABC News they “are convinced ISIS propaganda and their alleged online activities contributed to their ultimate shift toward violence.” The woman were apparently being “radicalized” by ISIS, messaging with with Al Qaeda in the Arabian Peninsula agents and watching beheading videos online.

[Image via AP]