Four AT&T fiber-optic cables were cut around 1:30 a.m. along Monterey Highway north of Blossom Hill Road in south San Jose, California, police Sgt. Ronnie Lopez has told the SFGATE. Sprint's cable in San Carlos was cut about two hours later, and the exact location was not immediately known.
The customers of AT&T and Verizon Wireless and Verizon broadband customers are affected by the outage. Verizon uses AT&T's backbone to connect its wireless and DSL service to Verizon's own national network. Therefore the disruption in AT&T lines have affected a lot of Verizon customers.
Police used yellow tape to cordon off the area where the AT&T cables were destroyed, which is near railroad tracks, as investigators and phone company workers descended into an underground vault where the cables are located.
"We're treating this as a crime scene," Lopez said.