Construction crews rupture large gas main in Niles

CHICAGO (CBS) -- Emergency crews are responding to a large natural gas leak in north suburban Niles.

Howard Street has been shut down for about a half mile in both directions after construction workers broke an 8-inch gas main near Lehigh Avenue.

Nicor workers were responding to the scene.

Firefighters were standing by as crews work to repair the leak.

No injuries have been reported