New York Police Department Commissioner Jessica Tisch said Monday that the case involving two men accused of throwing improvised explosive devices near Gracie Mansion is being investigated as an "act of ISIS-inspired terrorism."
Speaking during a press conference alongside Mayor Zohran Mamdani, Tisch said the suspects, Amir Balat and Ibrahim Kayumi, will be prosecuted in federal court in Manhattan.
She said a criminal complaint outlining the charges and factual allegations is expected to be made public later Monday.
Tisch declined to discuss specific details of the ongoing investigation, citing the pending federal prosecution, but confirmed that authorities are treating the case as terrorism-related.
The announcement comes after Fox News previously reported that federal agents served search warrants in New Jersey and Pennsylvania tied to explosive devices thrown during a protest in New York City.
A New York Police Department source told Fox News that devices hurled into the crowd were packed with nuts, bolts and screws, and contained a chemical substance inside a taped canister fitted with a fuse.
Balat and Kayumi, who were arrested on Saturday, remained in custody as federal teams searched their homes in Bucks County, Pennsylvania, according to federal sources.
Investigators also executed a warrant at a related address in New Jersey.
Other federal sources told Fox News on Monday morning that a "terror investigation" is now underway after confirmed improvised explosive devices and a suspicious device were discovered near Gracie Mansion over the weekend.
Sources said the two suspects, Balat and Kayumi, allegedly made pro-ISIS statements while in custody.
Investigators are also examining their past travel, including trips to Turkey and potentially other locations known as terror training grounds.
This is a developing story; check back for updates.