RICHMOND, Va. (AP) — The National Weather Service is investigating a possible tornado southeast of Richmond as the state continues to clean up after a storm that killed six and left more than 1 million electric customers without power.

Meteorologist James Foster says the weather service on Sunday will investigate the powerful winds that battered portions of Hanover and New Kent County on Saturday night. At Colonial Downs, horse racing was suspended during the storm and fans were told to take shelter in a stairwell.

A weekend-opening storm knocked out power to 1.2 million utility customers. Sunday, Dominion Virginia Power said more than 457,000 customers were without power. Appalachian Power reports 244,000 without power and Virginia Electric Co-op reports 86,000 without power.

Gov. Bob McDonnell has declared a state of emergency.

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