cnn cannot independently verify the authenticity of this frame grab. turkish officials apparently releasing two photos of the suspect. they tell us they have his fingerprints from the scene but so far have not given us a name of the suspect. there is also dramatic surveillance video of the gunman entering the nightclub. take a look at this. he is firing as he goes in. in some frames you can even see bullets ricocheting. he killed 39 people inside the nightclub and wounded dozens of others. the victims were from 14 different countries. isis has claimed responsibility for this attack but has given no clues about the identity of the gunman. terror experts tell us, if isis actually directed the attack, it may have been more likely to have been a martyrdom operation with the perpetrator either taking his own life or confronting police and dying in a hail of gunfire. the information that this man slipped away leads some experts to believe this might have been an isis-inspired attack by a man acting on his own, possibly,