The man who died in a fire at a home in New Bedford has been identified as 88-year-old Alfred Martin. 

Officials say Martin died at the scene of the two alarm fire Monday on Cotter Street, and four other people were injured. 

Investigators believe the fire started on or near a sofa, with either smoking materials or an electrical problem believed to be the cause.  The exact cause has not been determined and remains under investigation by multiple agencies.