Update at 12:05 p.m. — The line is capped and streets will reopen once emergency equipment is cleared from the roadway.

Earlier: Crews are on the scene of a gas leak in Crystal City, where several blocks are being closed to traffic.

We’re told a construction crew hit a two-inch gas line near Crystal Drive and 20th Street South. Crystal Drive has been shut down from 18th Street to 23rd Street while workers repair the line. Firefighters are currently checking nearby buildings for elevated gas levels.

There’s no estimate on when the road will re-open.