going on in the world today. it looks like another terrorist attack and what can you say? just never ends. we have to be strong and vigilant. >> joining us now with more from washington, catherine harris. we've seen thesech stories comep before. what's different about this one? >> dante we're getting a lot -- we're getting lot of information from the french police. individual was on the radar. they've identify him as 39-year-old from the suburbs of paris. someone indicated through telegram they wanted to kill police. it's very much a targeted killing based on the information that we have now. the suspect coming up to the police van and then opening fire with an automatic weapon. the claim from isis is significant. they offer nos evidence to back up the claim. what we don't know tonight