Michael Floresca, 42, was found dead around 6:20 a.m. inside an apartment in the 2200 block of Sun Avenue, near Civic Center Drive.
North Las Vegas fire officials said a man was seen running out of the apartment, then turning around and running back inside and shutting the door.
The coroner ruled Floresca died from inhalation of products of combustion. His death was ruled a suicide.
If you’re thinking about suicide, or are worried about a friend or loved one, help is available 24/7 by calling or texting the Lifeline network at 988. Live chat is available at 988lifeline.org.