An early-Thursday-morning outage on AT&T's mobile network was the result of a software problem and not a cyberattack, as several first-responding agencies initially feared.
AT&T reps told ABC News the interruption, which effected an estimated 70,000 AT&T cellular users, was caused by "the application and execution of an incorrect process used as we were expanding our network.
"We are continuing our assessment of today’s outage to ensure we keep delivering the service that our customers deserve," the statement added.
The FBI and the Department of Homeland Security (DHS) were among a number of federal agencies which quickly responded to the service interruption, fearing it was a cyberattack.
At 5 a.m. on Thursday, the DHS' U.S. Cybersecurity and Infrastructure Security Agency (CISA) unit reported, according to ABC News, that "the cause of the outage is unknown and there are no indications of malicious activity."
