Honolulu Police Department officials provided an update after Honolulu’s 911 system went down on Sunday, Nov. 17. HPD said they first noticed communication problems around 10:38 a.m. when they could not connect with the Honolulu Fire Department,

The public wasn’t notified about a 911 outage until about three hours after problems began because the Honolulu Police Department was struggling to come up with an alternate means of communication, officials said Monday. Police are investigating what caused the 911 outage and failure of the regular backup system.

Honolulu’s 911 system is currently down for customers using certain providers, including AT&T, Verizon and T-Mobile. In an emergency, use a landline to call 911.