The fire originated in the facility's power plant on the evening of Oct. 31, the Huntsville Times reported .
The paper said witnesses and firefighters attributed the fire to the transformers, but the cause remains under investigation.
The extent of any damage is unclear at this time.
On an unrelated note, Sanmina-SCI was recently involved in a pair of real estate transactions in the area. Brazelton Properties bought a 130,000-sq. ft. campus in Lacey's Spring, AL, for $1.2 million, and local investors purchased a 194,540-sq. ft. office and warehouse building in Huntsville for $2.9 million.