ORANGE COUNTY, Fla (WOFL FOX 35) - UPDATE: AT&T says 911 service has been restored for cellphone customers who had been unable to call 911 in Florida and several other states.
Various law enforcement and government agencies in Texas, Florida, Tennessee and other states had reported the problem Wednesday evening.
A spokesman for Dallas-based AT&T on Wednesday evening offered customers apologies for the problem.
But the spokesman did not immediately provide details on how many states or customers were affected or what caused the outage.
During the outage, many law enforcement agencies in affected states provided alternate numbers for people to call if they had an emergency.
AT&T says customers in Orange County may be unable to connect to their regional 911 call center, due to a carrier issue. If you encounter the problem hang up and dial 911 from a different phone with an alternative carrier.
Orange County officials say they are already in contact with AT&T to fix the problem. Residents who cannot access 911, should call at 407-836-4357 to reach the Orange County Sheriff's Office.