An overnight fire at the future home of an Atlanta police substation is “being investigated as suspicious,” officials said Sunday.

The blaze broke out at 711 Fulton Industrial Boulevard, a former SunTrust Bank branch that was donated to the city for a new police substation in October. The facility was still under renovation.

Atlanta fire spokesman Cortez Stafford said the cause of the fire, which left charred remnants near the front door, was unclear but investigators were treating it as suspicious.

“It was possibly intentionally set,” Stafford said in an email.

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