Widespread 911 outages reported in four US states

During the outage, dispatchers could see attempts to make calls from mobile phones and would call residents back, police said, and all attempted calls had been answered.

The outage also affected southern Nevada, the Nevada State Police said.

Outages were also reported by the local police departments of Del Rio, Texas and Dundy, Kearney, Howard and Fremont counties in Nebraska. Dundy County said about 12 a.m. on Facebook that service had been restored.

The South Dakota Department of Public Safety said on social media that the outage was affecting residents throughout the entire state. In most parts of the state, residents could still text 911, and call their local police and county sheriff offices on their nonemergency phone lines, the department said. About 11 p.m., the South Dakota Highway Patrol said on social media that service had been restored.

In February, a widespread AT&T outage temporarily cut off connections for users across the United States for many hours, leaving FirstNet, the emergency communications network, out of service. Police forces like the New York Police Department were unable to make calls or send emails.