Tonight the new clues and the new images and the urgent manhunt in New York City for the gunman who fatally shot the CEO of United Healthcare.

The first photo is showing the face of the person of interest wanted for questioning in the brazen targeted shooting of that CEO in Manhattan.

New video that may show him fleeing on a bike 30 blocks away, the hostel where he's believed

to have stayed, and the cryptic clues found written on bullet casings at the crime scene,

what we're learning.

Also tonight the powerful 7.0 magnitude earthquake rocking Northern California.

Damage reports coming in, supermarkets shaking, doors knocked off their hinges, residents ordered to move inland.

The tsunami warning and evacuations now lifted, but the concerns tonight over aftershocks.

The Arctic blasts turning deadly as it pushes into the northeast, dangerous snow, millions on alert from Michigan to Maine.

Two kindergartners wounded in a shooting at a California Christian school.

The meeting the adult gunman had with the principal moments before opening fire.

The stowaway is snuck onto a flight at JFK to Paris back on U.S. soil

and making her first court appearance.

This is NBC Nightly News with Lester Holt.

Good evening and welcome. New York City Police on the Trail of the Killer, who gunned down

the CEO of a major health care company, have amassed a string of potential clues and images as part of a

massive manhunt. Today, the NYPD releasing a pair of full-face photos of a person of interest

in the deadly ambush of the 50-year-old head of United Healthcare, Brian Thompson. Over the past 36 hours,

police tracing the killer's movements that included a stop

at a Starbucks shortly before the attack, where he purchased and then discarded items that are now

pieces of evidence. And tonight, the investigation placing that person of interest at a hostel

where police believe he stayed. And back at the crime scene, bullet shell casings were covered that may hint at a motive.

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