Earlier this morning, AT&T U-Verse subscribers woke up to an alarming, unexplained Emergency Alert Message on their screens. Now the company is trying to shed a bit of light on what exactly happened.

“A Federal Emergency Management Agency (FEMA) investigation indicates that a nationally syndicated radio show not affiliated with AT&T accidentally sent a message over the National Emergency Alert System,” reads a statement from AT&T. “This false message was carried on our network, as well as some other providers. We apologize to our customers.”

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