Terror investigation underway after explosive thrown near NYC mayor’s residence

Tonight, the FBI and NYPD investigating a bomb thrown outside the New York City mayor's home as a potential act of terrorism. Police say it happened during dueling protests outside Gracie Mansion Saturday while Mayor Zoran Mamani and his wife were home. The FBI says two men identified as Ibrahim Caillumi and Amir Balot are now in federal custody after being arrested at the scene.Two people familiar with the matter telling NBC News both men allegedly made pro-ISIS statements during their arrest. Earlier toda ...