Thousands of people were without power Friday as a heavy storm downed power lines and damaged electrical equipment across Southern California.

As of 9 p.m., there were about 67,000 customers throughout the region who had no electricity, according to Southern California Edison.

Edison said 9,213 of those were in Orange County, with the biggest outages reported in Laguna Beach, Costa Mesa, Seal Beach, Buena Park and Lake Forest. In Laguna Beach, there were 2,864 affected; 2,018 in Costa Mesa; 1,067 in Seal Beach; 903 in Buena Park and 708 in Lake Forest.

Edison is still investigating the cause of the majority of the outages, said Sally Jeun, a spokeswoman for Southern California Edison. But she said company officials suspect the vast majority are related to Friday’s storm, with at least one small incident in Long Beach attributed to the winds.

“Crews are working around the clock to restore power and make repairs,” said Jim Cherrie, Edison’s storm incident commander.

Residents are reminded to never touch a downed power line or attempt to remove tree branches resting on cables. Instead, call 911 or Edison at 800-611-1911.

Also remember that power outages may mean traffic signals are out, Jeun said, so approach intersections with caution during the storm.

For the latest information on power outages, check the live map on Edison’s website here: SCE.com/wps/portal/home/outage-center/check-outage-status/.

Staff writer Alma Fausto contributed to this report.