A man pulled out a gun inside an off-strip casino and shot two people, killing one, after someone splashed a drink in his face, authorities said.
A security videotape clearly showed the gunman's face and clothing, said Sean Walker, a North Las Vegas police spokesman.
"The tape's good enough that we think we can (identify him)," Walker said.
The gunman, who appears to be in his late teens or early 20s, killed a man and shot a woman in the hand inside the Silver Nugget casino Sunday, authorities said.
Authorities did not immediately release information about the victims.