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SAN DIEGO – Firefighters Tuesday responded to an early morning fire at an abandoned warehouse in Barrio Logan.

The fire was reported around 4:30 a.m. in the 1700 block of Newton Avenue. About 40 firefighters responded to the call and took just over one hour to put out the flames, according to San Diego Fire-Rescue Department.

Crews are still investigating the cause of the fire. No injuries have been reported.