He said the 911 lines were not affected, but the internet was down at the dispatch centre and phone services also were spotty.
The company initially estimated it could end the outage in four hours.
State police spokesperson Dave Procopio said early Friday morning that the department believed the outage knocked out 911 emergency call services for wireless users in the Bay State.
Officials in Sweetwater County, Wyoming resorted to publishing alternate phone numbers for those needing emergency services, as the CenturyLink outage affected the Sweetwater Combined Communications Center, which receives 911 calls for the region.
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The effect on people's ability to reach 911 emergency services is "completely unacceptable", he said.
That statement was followed up with a Facebook post around 8:45 a.m. Friday morning.
"We apologize for the inconvenience w/ multiple alerts", CRESA tweeted.
In 2016, the Washington Utilities and Transportation Commission fined the company almost $3 million for failing to reroute emergency calls during a 6 hour service outage in 2014. "I've directed the Public Safety and Homeland Security bureau to immediately launch an investigation into the cause and impact of this outage".
Residential customers have also tweeted some harsh words, mostly about the lack of updates and customer service from CenturyLink. Pai added that he has been in direct contact with CenturyLink to emphasize the urgency of restoring service and will be monitoring progress closely.