SAN DIEGO -- 10News is learning new information on Wednesday about the sequence of events that led up to the massive blackout that wiped out power for millions across the region earlier this month.

An investigation by the California Independent System Operator revealed that there was not enough coordination between the five power system operators impacted by the Sept. 8 outage, which left several million people in Orange and San Diego and Imperial Counties as well as part of Mexico and Arizona without power.

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