(Bloomberg) -- California officials investigating the deadly Fairview Fire seized some Edison International overhead wires, including one that showed signs of damage, according to a report the company filed with state regulators.

The fire in Riverside County erupted on Sept. 5, killing two people and injuring three. Investigators with the California Department of Forestry and Fire Protection have identified two “areas of interest,” one of them near a Southern California Edison power line, the other about 500 feet (150 meters) to the west, according to the filing Monday. Telecom company Frontier Communications also has equipment on the same utility poles, the report said.

At the investigators’ request, Edison and Frontier removed some overhead equipment in the area and turned it over to the department, better known as Cal Fire. Wires from both Edison and Frontier showed signs of damage, according to the report, but the cause was not immediately clear. Edison previously reported unusual activity on one of its circuits close to the start time of the fire. 

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