Fiber optic cables are made to withstand all types of weather and years of wear and tear, but one thing they can’t withstand is getting shot, as 30,000 people at Oakland, California.

Like DCD reports, an outage occurred in Oakland around 5 a.m. Sunday following reports of shootings at the city’s Eastmont mall. The police department later confirmed that surveillance footage captured someone firing 17 shots through their vehicle window and into the air. As Comcast’s tweet below confirms, multiple bullets pierced fiber cables.

About 30,000 people in the region were left without internet access, television or telephone services, and their home security systems went offline. By 3:40 p.m., Comcast was able to restore service to about 10,000 customers, but as of 6 p.m. the remaining 20,000 were still waiting for their connections to be restored. At the time, Comcast spokeswoman Joan Hammel apologized, saying, “We are working as quickly as possible to complete all repairs and get people’s services back up and running.” We had to wait until 10 a.m. this morning to get everyone back online.

As the San Francisco ChronicleSan Francisco Chronicle reports, police first discovered the location of the shots using the ShotSpotter detection system. It uses a range of sensors, including acoustic, vibration and optical sensors, to accurately detect the precise location where shots were fired. In this case, when the police offices arrived at the intended location, they found shell casings. Surveillance footage captured in the area later confirmed the single shooter and the direction of the shots.