The 911 outage reported across Pennsylvania Friday afternoon was restored, the state's emergency management agency announced Saturday morning.

In a post on X shortly after midnight Saturday, the agency said, "An investigation into what caused intermittent outages will continue, and we will update you on that as soon as we can. We worked with counties to fully test that the system is operational. Please do not call 911 for testing purposes; leave lines open for true emergencies."

The issue was originally reported as a "statewide intermittent 911 outage" through a wireless emergency alert. However, during a press conference Friday evening, Pennsylvania Emergency Management Director Randy Padfield emphasized this isn't an outage. 

CBS News Philadelphia sources say it is an IT issue with a third-party company contracted through the Pennsylvania Emergency Management Agency. Padfeld said it's too early to tell what exactly caused the problem, but it could be a software or hardware issue. 

Gov. Josh Shapiro said Saturday that emergency management officials believe the cause was a technical issue, "not an act of sabotage."

"Our team got on it immediately yesterday, restored 911 capabilities relatively quickly and also put out guidance on what folks should do in that interim, I thought they handled it really well, they worked closely with our county officials," Shapiro said.

According to Padfield, around 2 p.m. Friday, a 911 service provider that supplies network services for the commonwealth detected a situation on the 911 network where calls were intermittently failing to be delivered. The issue was originally detected with calls going into the Delaware County 911 center, the PEMA director said.

"This was originally detected with calls going into Delaware County 911 center. The Next Gen 911 service provider immediately notified our 911 team and engaged to start troubleshooting the issue and identify the root cause of the issue," Padfield said.

After this, the provider let PEMA know, and troubleshooting began, as did the investigation into the root cause of the issue. 

Other counties began reporting a similar issue, and then, Padfield said, out of an abundance of caution, the emergency alert shown in a screenshot below was sent to the public, including CBS News Philadelphia and CBS News Pittsburgh staffers, at around 3:30 p.m. 

The alert read in part, "Pennsylvania is experiencing a statewide intermittent 911 outage. Individuals experiencing issues contacting 911 are asked to contact their local 911 Center on their non-Emergency lines."

"The system continues to have some intermittent connectivity issues at this point in time. They are still trying to troubleshoot," Padfield said during the press conference.

Padifeld said earlier Friday that it seems the majority of the 911 calls were being delivered; however, there were some "intermittent issues" related to the calls. For instance, some of the calls may not have location or number data.

"Individuals should continue to use 911, and if they would call 911 for an emergency and the call is not delivered, they should use the backup seven-digit administrative line or follow the instructions of their local 911 center or public safety answering point," Padfield said.

Shapiro urged residents to stay calm, adding that the state is working to restore service quickly. 

PEMA said it continues to work with technical experts to solve the issues. The agency asked residents to call 911 only for serious emergencies. Do not call just to check if the 911 service is working; this will only clog up the lines.

In select cases, if residents did call 911 and couldn't get through, callers should also be aware that they may receive a follow-up phone call from the operators.  

CBS News Philadelphia learned that some Pennsylvania counties called residents to keep them informed on the outage. 

So while you may not normally answer a phone call from an unknown number, as the 911 outage continues, residents should be aware that a county number might've given them a call for helpful information about local emergency response contacts.  

Residents were urged to find their area's local non-emergency number and answer the phone if they call during the outage. 

PEMA encouraged those in the commonwealth to check their county's social media and website for more information.  

Anyone looking for their local 911 office or hotline can check the agency's list online. We've also compiled a list below of phone numbers for those in Pennsylvania counties throughout the state. 

Philadelphia emergency numbers by police district

• 1st District – 215‑686‑3010 / 215‑686‑3011
• 2nd District – 215‑686‑3020 / 215‑686‑3021
• 3rd District – 215‑686‑3030 / 215‑686‑3031
• 5th District – 215‑686‑3050 / 215‑686‑3051
• 7th District – 215‑686‑3070 / 215‑686‑3071
• 8th District – 215‑686‑3080 / 215‑686‑3081
• 9th District – 215‑686‑3090 / 215‑686‑3091
• 12th District – 215‑686‑3120 / 215‑686‑3121
• 14th District – 215‑686‑3140 / 215‑686‑3141
• 15th District – 215‑686‑3150 / 215‑686‑3151
• 16th District – 215‑686‑3160 / 215‑686‑3161
• 17th District – 215‑686‑3170 / 215‑686‑3171
• 18th District – 215‑686‑3180 / 215‑686‑3181
• 19th District – 215‑686‑3190 / 215‑686‑3191
• 22nd District – 215‑686‑3220 / 215‑686‑3221
• 24th District – 215‑686‑3240 / 215‑686‑3241
• 25th District – 215‑686‑3250 / 215‑686‑3251
• 26th District – 215‑686‑3260 / 215‑686‑3261
• 35th District – 215‑686‑3350 / 215‑686‑3351
• 39th District – 215‑686‑3390 / 215‑686‑3391
• Airport Unit (77th District) – 215‑937‑6816 / 215‑937‑6817
• DVIC OPS CENTER- 215-897-0800

List of Pennsylvania counties' emergency numbers

• Chester County: 610-436-4700 / 610-344-6456
• Bucks County: 215-328-8500 / 215-357-8700
• Delaware County: 610-565-6575 / 610-891-5200
• Montgomery County: 610-635-4300
• Northampton County: 610-759-2200
• Lehigh County: 610-437-5252 / 610-437-7751
• Berks County: 610-655-4911 
• Allegheny County: 412-473-3056
• Armstrong County: 724-548-3431
• Beaver County: 724-775-1700
• Butler County: 724-282-1221
• Cambria County: 814-472-2100
• Clarion County: 814-226-6631
• Fayette County: 724-430-1277
• Greene County: 724-627-5387
• Indiana County: 724-349-9300
• Lawrence County: 724-656-9300
• Mercer County: 724-662-6110
• Somerset County: 814-445-1525
• Venango County: 814-677-0325
• Washington County: 724-229-4600
• Westmoreland County: 724-836-1551