Several counties without power Thursday morning

By Heartland News
1pm Update: As of 1pm Ameren's website says Clarkton has power.
Several counties in the Heartland had homes without electricity for a couple of hours.
It started around 4 a.m. Thursday when the power went out in Delta.
The numbers grew through the morning.
As of 12:30 p.m., power in the Heartland seems to be back on expect in the Clarkton area.  According to Ameren's website, about 620 customer were out of power.
More than 3000 customers did not have power at one point in the Heartland.
An operator with Ameren says they're not sure what caused the outage.