Early morning fire rips through Phoenix duplexes

An early morning fire ripped through a pair of duplexes in Phoenix Tuesday.

It happened at about 5 a.m. at 32nd Avenue and Melvin.

Flames tore through one duplex and badly damaged the other.

Some 30 firefighters were called out to the scene and went defensive once they learned nobody was inside either of the structures. Both were vacant.

Neighbors said the landlord might have been doing some electrical work in one of the duplexes, but at this point, firefighters don't know for sure how the fire started.

No injuries were reported and an investigation is under way.