Just after 9 a.m., a 2-inch natural gas line ruptured near Balboa High School at 1000 Cayuga Avenue and James Denman Middle School located at 241 Oneida Ave., San Francisco Fire Lt. Mindy Talmadge said.
PG&E crews are at the scene and hope to have the leak capped by about 10 a.m., Talmadge said.
The fire department issued a precautionary shelter-in-place warning for the two schools while repairs were being made, Talmadge said.
Nearby homes and businesses were not affected by the shelter-in-place advisory, Talmadge said.
