NYPD share new photos of possible Brian Thompson shooter NBC Los Angeles [Video]

They have seen him smiling on a hostel security camera, but don’t know his name. They found the backpack he discarded while fleeing, but don’t know where he’s gone.

As the search for UnitedHealthcare CEO Brian Thompson’s killer goes on, investigators are reckoning with a tantalizing dichotomy: They have troves of evidence, but the shooter remains an enigma.

Police don’t know who he is, where he is, or why he did it, though they are confident it was a targeted attack instead of a random act.

“The net is tightening,” New York City Mayor Eric Adams said Saturday.

Hours after he spoke, police divers were seen searching a pond in Central Park, where the killer fled after the shooting. Officers have been scouring the park for days for any possible clues and found his bag there Friday.

Late Saturday, police released two additional photos of the suspected shooter that appeared to be from a camera mounted inside …