PG&E crews capped a natural gas leak that occurred Thursday morning in a residential area of Millbrae, a utility spokesman said.
The leak occurred at 10:23 a.m. in the 500 block of Hillcrest Boulevard and PG&E crews were on the scene within 15 minutes, according to PG&E spokesman Jason King.
King said a third-party plumbing contractor digging in the area caused the leak.
The flow of gas was stopped at 11:03 a.m., King said.
No evacuations were necessary and no injuries were reported. A portion of Hillcrest Boulevard was temporarily shut down.
King said the incident highlights the importance of residents and contractors calling 811 to confirm the presence of gas lines before digging.