Update at 11:10 a.m. — The leak has been traced to the construction site where the new Wakefield High School is being built. Students are expected to be let back into the school shortly.
The Arlington County Fire Department is investigating a possible gas leak inside Wakefield High School.
Firefighters are laying out fire hoses while they try to find the source of a gas-like odor in the school, which has been evacuated.
Police are also responding to the scene to assist with traffic control. Chesterfield Road is being blocked off in front of the school.