officer at practically point-blank range in philadelphia. police say the gunman later confessed to doing it in the name of the islamic state, isis. surveillance cameras captured the attack and show the gunman, you can see it right there, with his weapon inside the officer's patrol car. cnn's miguel marquez joins us now from philadelphia at police headquarters. miguel, this creates so many new questions about terrorism, police safety, the possibility of copycats. what's the very latest? >> reporter: and this is exactly what police are now digging into. trying to find any shred of evidence that links this gunman to terrorism. but strip all that away, the actions of that philadelphia police officer, jesse hartnett, were nothing short of heroic. these photos show a man firing his gun directly into a philadelphia police officer's car. and police say he claims to have done it in the name of radical islam. >> shots fired. i've been shot! i'm bleeding heavily!