During this same time frame, improvements were being made to lower case “library park,” the informal name for 3.35 acres of greenery across Main Street from El Segundo High School, which had ...

The school in the 600 block of Main Street was placed on lockdown about 8:50 a.m. in response to a "potential safety threat,'' according to a statement from the El Segundo Unified School District.

The school located in the 600 block of Main Street was placed on lockdown about 8:50 a.m. "due to a potential safety threat," according to a statement from the El Segundo Unified School District.