good evening. and we begin tonight with an abc news investigation. isis is now claiming its first victory here on american soil claiming responsibility for that terror in texas. the gunmen who opened fire the traffic cop shooting them both dead. we all saw the chaos that followed. isis now taking credit for what those men did. but offering no proof tonight. also this evening, word of another person from the united states involved before this horrific scene played out. abc news has learned about secret conversations and messages that allegedly led up to the deadly encounter in texas. the burned-out car when it was all over. tonight, the hunt for the third person, an american fugitive. and abc s chief investigative correspondent brian ross with those messages, right here tonight. reporter: isis today claimed responsibility for these scenes of america under attack bullets flying and police scrambling. the terror group said the two heavily armed men killed in the attack elton
the new lawsuit tonight. good evening. and we begin tonight with an abc news investigation. isis is now claiming its first victory here on american soil claiming responsibility for that terror in texas. the gunmen who opened fire the traffic cop shooting them both dead. we all saw the chaos that followed. isis now taking credit for what those men did. but offering no proof tonight. also this evening, word of another person from the united states involved before this horrific scene played out. abc news has learned about secret conversations and messages that allegedly led up to the deadly encounter in texas. the burned-out car when it was all over. tonight, the hunt for the third person, an american fugitive. and abc s chief investigative correspondent brian ross with those messages, right here tonight. reporter: isis today claimed responsibility for these scenes of america under attack bullets flying and police scrambling. the terror group said the two heavily armed men
good evening. a claim today by isis that it had a hand in the shooting attack on an anti-islamist gathering in texas sunday has ratcheted up concerns about isis in this country, and its potential reach. it s the first time islamic state has tried to claim credit for an attack on american soil. the white house today labeled it an attempted terrorist act, but it dismissed the isis claim itself. it may, however, be a fine distinction, as there are indication the shooters, who were both killed, were inspired by isis to go on the attack. we have two reports, beginning with our justice correspondent, pete williams. reporter: in radio and internet messages, isis claimed the two gunmen from phoenix, nadir soofi and elton simpson, were soldiers of the caliphate, or islamic state, and that worse things are coming. u.s. officials call it an attempt to claim credit and say there s nothing to show isis actually planned or directed the plot. they say simpson used several social media
from nbc news world headquarters in new york this is nbc nightly news. reporting tonight, lester holt. good evening. a claim today by isis that it had a hand in the shooting attack on an anti-islamist gathering in texas atcheted up concerns about isis in this country and its potential reach. it s the first time islamic state has tried to claim credit for an attack on american soil. the white house today labeled it an attempted terrorist act, but it dismissed the isis claim itself. it may, however, be a fine distinction, as there are indications the shooters, who were both killed, were inspired by isis to go on the attack. we have two reports, beginning with our justice correspondent, pete williams. reporter: in radio and internet messages, isis claimed the two gunmen from phoenix, nadir soofi and elton simpson, were soldiers of the caliphate, or islamic state, and that worse things are coming. u.s. officials call it an attempt to claim credit and say there s nothing
good evening. and we begin tonight with an abc news investigation. isis is now claiming its first victory here on american soil, claiming responsibility for that terror in texas. the gunmen who opened fire, the traffic cop shooting them both dead. we all saw the chaos that followed. isis now taking credit for what those men did. but offering no proof tonight. also this evening, word of another person from the united states involved before this horrific scene played out. abc news has learned about secret conversations and messages that allegedly led up to the deadly encounter in texas. the burned-out car when it was all over. tonight, the hunt for the third person, an american fugitive. and abc s chief investigative correspondent brian ross with those messages, right here tonight. reporter: isis today claimed responsibility for these scenes of america under attack bullets flying and police scrambling. the terror group said the two heavily armed men killed in the attack, el