The fire broke out in Hampden County around 8 p.m., Wednesday, Jan. 19, on Union Avenue in Westfield, said Deputy Chief Andrew Hart of the Westfield Fire Department.
The fire started in one unit which received the most damage, but the other three units received smoke and water damage, Hart said.
Two dogs were rescued by firefighters during the incident.
No one was injured during the incident, Hart said.
The Red Cross was called to offer assistance to the families and animals.
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