A Phoenix man died of possible smoke inhalation after he was found in a burning apartment with a nonworking smoke detector late Monday night.
Fire investigators said the man appeared to be trying to escape the fire before he was overcome.
The fire's origin appeared to have started in the kitchen, investigators said Tuesday morning.
The man, estimated to be in his mid to late 50s, was found about 11:10 p.m. in the bedroom on the second floor of the two-story apartment Glendale and 17th avenues, Phoenix Fire Capt. Jonathan Jacobs said.
Investigators said a smoke alarm in the man's apartment did not have any batteries. A smoke alarm in a neighbor's unit was activated and that neighbor called the fire department, investigators said.
Neighbors told CBS 5 News the man had been acting peculiar of late, walking around the complex with no clothing and asking for matches and lighters.
Jacobs said the man was taken to the Maricopa County Medical Center's burn unit in critical condition and died Tuesday morning.
The fire was contained to the kitchen area and no other residents were hurt or displaced, Jacobs said.
The cause was still under investigation, but was initially called accidental.
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