Several police forces in several states have reported that their 911 emergency telephone lines are down.
Cities as large as Las Vegas, as well as the entire state of South Dakota and localities in Nebraska have announced the cuts and have published administrative numbers as alternatives.
The emergency number to contact the police, ambulances and fire brigade is reportedly currently not connecting to call centres.
Police have urged the public to call alternative numbers if they need help.
In Las Vegas specifically, no estimate was given as to how many will be back up and running after an outage that began at 7 p.m. local time.
South Dakota and Nebraska are connected, but Las Vegas is hundreds of miles from either of them.
Several police forces in several states have reported that their 911 emergency telephone lines are down.
Cities as large as Las Vegas, as well as towns in South Dakota and Nebraska, have announced the outages and published administrative numbers as alternatives.
This is breaking news.