Due to an AT&T outage Wednesday night, 911 service was temporarily not available for some AT&T wireless customers.
AT&T said the issue was resolved at 10:30 p.m.
The cell network outage only affected AT&T cell phone subscribers.
"Every call to 911 must go through", Pai said the statement. "We apologize for this inconvenience", an AT&T spokesman told WFAA ABC earlier.
"In cases of actual emergencies tonight, AT&T cellular phone customers who can not reach 911 in Apopka, Maitland and Eatonville should call the city's emergency dispatch center at 407-703-1757".
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AT&T is the second-largest wireless carrier in the United States and such an outage in multiple states nationwide indicates that the issue was quite widespread. AT&T did not say what the problem was or how it corrected the situation, saying only that it's been fixed. FCC chairman Ajit Pai announced that FCC public safety staff would look into the cause.
A short time later AT&T addressed the outage with a Tweet informing customers that an unspecified issue was affecting some 911 calls.
It was not immediately clear how many customers were affected by the outage.
Keller, Colleyville, Wylie and Highland Park have taken to social media to report the outages.