An apartment fire seriously damaged several apartments in Richardson Wednesday morning.
The 1-alarm blaze was called in at about 5:30 a.m. at the 500 block of Spring Valley Road.
According to firefighters, the man living inside the apartment where the fire started saw light smoke coming from the heating vents. Not thinking it was a fire, he called maintenance.
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When maintenance arrived, they opened up a vent on the furnace and saw flames.
The fire destroyed that apartment and damaged five others nearby.
No one was injured.
The cause of the fire is under investigation.