SAN FRANCISCO (KRON) — Some AT&T customers in San Francisco were not be able to contact 911 because of an outage, according to a tweet from San Francisco Department of Emergency Management.

The department said on Twitter that anyone in San Francisco who needs to get in contact with emergency services should dial the seven-digit phone number for emergencies at 415-553-8090.

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AT&T users took to Twitter to complain about the outage starting on Monday. The complaints continued into Tuesday with users from the East and West coasts complaining about connectivity problems. AT&T provided a statement to KRON4 on the outage:

An issue with a third-party company that provides service to us and other carriers impacted 911 calls for some of our customers this afternoon. We have been in contact with the company and they have resolved the issue.