GEORGIA HIGH SCHOOL. THE NEW INFORMATION WE ARE LEARNING ABOUT THE TEENAGE SUSPECT. >>> BUT FIRST, THE QUEENS-MIDTOWN TUNNEL REOPENS AFTER A CONTRACTOR ACCIDENTALLY DRILLED A HOLE INTO THE TUNNEL, CAUSING A LEAK. HOW IT ALL HAPPENED AND WHETHER IT IS STILL IMPACTING TRAFFIC TONIGHT BUT >>> GOOD EVENING, I'M KRISTINE JOHNSON. THE TRAFFIC MESS STARTED THIS AFTERNOON JUST BEFORE THE EVENING RUSH. CHOPPER 2 WAS OVER THE SCENE AT THE TUNNEL AS LONG LINES FORMED ON BOTH SIDES OF THE EAST RIVER. NOW TONIGHT, QUESTIONS REMAIN OVER HOW THIS MISTAKE COULD HAVE HAPPENED. ALI BAUMAN IS LIFE FOR US IN MURRAY HILL WITH THE LATEST POINT >> KRISTINE, THE MTA SAYS THEY TEMPORARILY LOVED THE LEAGUE, AND NOW THE NORTH AND SOUTH TO OUR BACK OPEN IN BOTH DIRECTIONS, BUT CITY AND STATE OFFICIALS ARE INVESTIGATING HOW A SUBCONTRACTOR MANAGED TO DRILL A HOLE IN THE TUNNELS CAST-IRON WALLS. NOW, IT IS A NEW FEAR UNLOCKED. DRIVERS GOING THROUGH THAT QUEENS-MIDTOWN TUNNEL THIS AFTERNOON SAW WATER POURING IN FROM THE CEILING AND WALLS. THE MTA SUBSEQUENTLY SHUT THE TUNNEL DOWN IN BOTH DIRECTIONS AND SAY THERE ARE NO REPORTED INJURIES OR DAMAGED VEHICLES. A SUBCONTRACTOR THEY HIRED WAS DOING PRELIMINARY WORK ON A PROJECT AND ACCIDENTALLY DRILLED A HOLE 2 1/2 INCHES WIDE IN THE TUNNELS OUTER CASINGS AND THROUGH ITS CAST-IRON MINING, CAUSING WATER FROM THE EAST RIVER TO LEAK IN THROUGH THE TUNNELS EXHAUST DUCTS. I ASKED THE MTA HOW THAT MISTAKE WAS EVEN ABLE TO HAPPEN. >> AS I UNDERSTAND IT, THEY DRILLED 100 FEET FROM THE SURFACE OF THE WATER, ABOUT 50 FEET THROUGH WATER, AND ANOTHER 50 FEET THROUGH SOIL, THEN TO THE TUNNEL. >> HOW IS TRAFFIC TODAY? >> BRANDIS, THE WORST, I HAVEN'T SEEN IT WORSE THAN THIS ALL SUMMER, PROBABLY THE LAST COUPLE YEARS. >> Reporter: AGAIN, THE TUNNEL IS BACK OPEN IN BOTH DIRECTIONS. THE MTA SAYS THEY ARE TRYING TO PERMANENTLY PLUG THAT LEAK, BUT WANT TO ASSURE NEW YORKERS THAT IT IS STILL SAFE TO DRIVE THROUGH IN THE MEANTIME LIVE IN MURRAY HILL, ALI BAUMAN, CBS NEWS NEW YORK. >> THANK UPDAYOTEU . FOR