-- The Federal Communications Commission said Wednesday night it will investigate "the root cause" of an outage that prevented AT&T wireless customers in several states from connecting to 911.
FCC chairman Ajit Pai tweeted, ".@FCC AT&T has reported to me that 911 service is now restored. The @FCC will investigate the root cause of the outage and its impact."
At 10:30 p.m. ET, Dallas-based AT&T tweeted, "Issue has been resolved that affected some calls to 911 from wireless customers. We apologize to those who were affected."
AT&T confirmed the outage about 40 minutes earlier, at 9:49 p.m. ET, tweeting, "Aware of issue affecting some calls to 911 for wireless customers. Working to resolve ASAP. We apologize to those affected."