Updated 3:30 p.m.

All power has now been restored to the Saugus area affected by a Thursday morning underground failure.

Traffic signals were out for most of the day at Bouquet Canyon Road near Central Park and Highlands Elementary School were given an unexpected day off when they were without power.

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Problems began at 9:32 a.m. when wires in an underground vault failed, causing a to transformer blow up near the school on Catala Drive. Hot wires in the street and driveways of the school temporarily trapped staff and students at the school, but Edison crews switched power lines off for repairs and students were moved to Bouquet Canyon School for pickup.

2,100 customers were affected.