As power is slowly restored to Dorchester, it goes out in South Boston

Update: Eversource predicting 3:45 a.m. restoration for roughly 1,500 South Boston customers.

It's the night the lights went out in Southie, around 7:45 p.m. to be exact.

As of 8:20, Eversource was showing more than 2,500 customers without power in South Boston, mainly east of Dorchester Street, but especially east of L Street - out of 4,300 customers without power across the entire city, with most of the rest still in Dorchester.

The company was estimating 9:45 p.m. for restoration.

Whatever caused the power to zap out apparently happened on East 6th St. between O and M - which is now closed so Eversource can fix whatever went wrong.