Outages have been reported in numerous cities on the West Coast, with the largest affecting Seattle and San Francisco

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Update at 11 p.m.: Comcast says that its engineers have restored service to customers after an earlier widespread outage. However, several customers are still reporting service problems in the Seattle area, according to Downdetector.com, a crowd-sourced outage site.

Original post: Comcast customers in the Puget Sound area are without service because of a widespread outage Monday night.

Outages have been reported in numerous cities on the West Coast, with the largest outages affecting Seattle and San Francisco, according to downdetector.com, a crowd-sourced outage site. Comcast has not released an estimated restoration time, but Comcast has notified some customers the restoration may come as late as midnight.

Engineers are investigating the issue, Comcast tweeted around 8 p.m.

“We could say we apologize, & we do, but we know, we know, you want the Internet & we’re working it,” the tweet says.

An estimated 30,000 Comcast customers in the Seattle area were affected by a 10 hour outage in April after a construction crew cut through a fiber-optic line in South Lake Union. Another service outage on May 2 limited cable-TV channels to Washington customers.

Comcast is Seattle’s largest cable provider, serving about 200,000 subscribers with Internet service, cable television and, in some cases, telephone service, according to the City of Seattle Office of Cable Communications.