injured. trapped in their seats for hours. good evening. and it s great to have you with us here on a tuesday night. we begin in boston. that dramatic terror takedown. a man who authorities say had been under 24-hour surveillance by the fbi, believed to have been inspired by isis. today, that 65 5 suspect, turning on authorities, they say coming after them with a military-style knife. they released this image of the knife today. they shot him dead. and this evening comes word of an arrest in the case and the number of searches under way right now. abc s tom llamas is on the scene in boston. yeah, they have a gentleman, black male, six feet, coming out now, armed with a knife. reporter: police transmissions capture the final moments a man allegedly armed with that large military knife charged an fbi agent and boston police officer in this parking lot. all right, there s shots fired, units, shotted fired. reporter: 26-year-old usaama rahim had been under 24-hour surv
injured. trapped in their seats for hours. good evening. and it s great to have you with us here on a tuesday night. we begin in boston. that dramatic terror takedown. a man who authorities say had been under 24-hour surveillance by the fbi, believed to have been inspired by isis. today, that 65 5 suspect, turning on authorities, they say coming after them with a military-style knife. they released this image of the knife today. they shot him dead. and this evening comes word of an arrest in the case and the number of searches under way right now. abc s tom llamas is on the scene in boston. yeah, they have a gentleman, black male, six feet, coming out now, armed with a knife. reporter: police transmissions capture the final moments a man allegedly armed with that large military knife charged an fbi agent and boston police officer in this parking lot. all right, there s shots fired, units, shotted fired. reporter: 26-year-old usaama rahim had been under 24-hour surv
injured. trapped in their seats for hours. good evening. and it s great to have you with us here on a tuesday night. and we begin in boston. that dramatic terror takedown. a man who authorities say had been under 24-hour surveillance by the fbi, believed to have been inspired by isis. today, that 6 5 suspect, turning on authorities, they say coming after them with a military-style knife. they released this image of the knife today. they shot him dead. and this evening comes word of an arrest in the case and the number of searches under way right now. abc s tom llamas is on the scene in boston. yeah we have a gentleman, black make six feet coming out not, armed with a knife. reporter: police transmissions capture the final moments a man allegedly armed with that large military knife charged an fbi agent and boston police officer in this parking lot. all right, there s shots fired, units, shots fired. reporter: 26-year-old usaama rahim had been under 24-hour surveill