Police investigate explosive device thrown near mayor's home after protest

Police in New York City are investigating after an improvised explosive device was thrown near Gracie Mansion, the mayor's official residence. The device was thrown during or after an anti-Islam protest, and a man has been detained in connection with the incident.

Jessica Tisch, a city official, said the 'suspicious devices' thrown could have caused death. The FBI is investigating two men for potential terrorism charges related to the protest incident.