Transcript for ISIS claims responsibility for deadly Paris knife attack

Jon, thanks very much. That terror attack in Paris. ISIS is claiming responsibility for the deadly knife attack by a 20-year-old who stabbed five people killing one before he was taken down by police. ABC's James Longman has the latest and, James, police now questioning the killer's family. Reporter: That's right. Good morning. This suspect's parents and a friend being questioned today but this terrifying attack hit streets packed with people enjoying their Saturday evening near the Paris opera house. A man a a knife stabbing randomly at pedestrians. He killed one person and injured four others. People inside bars and restaurants barricaded themselves in as witnesses say he shouted allahu akbar, god is great as he lunged at them. The islamic state has claimed responsibility for his actions. The police were quick to react shooting and killing the man in just nine minutes amazingly. The suspect has been identified as 20-year-old khamzat azimov on a radicalization watch list. This was not a well planned or executed attack, nothing like the big irplots that left many more dead in the Bataclan, for example, but a reminder of the tourist season to stay vigilant. James Longman, thanks very much.

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