A sophomore at Franklin Regional High School in Murrysville, Pennsylvania, attacked his fellow students Wednesday morning, injuring at least 20 people, four of them seriously. He is now in police custody.
An American ice dancing team made history, and the U.S. and Russia finished Monday tied at the top of the medal table. Here's a recap of the day's action in Sochi:
Team USA forged a tie with Norway for the overall medal lead, and Japan won its first Olympic gold medal in men's figure skating. Here's a recap of Friday's action in Sochi:
American snowboarder Shaun White did not medal in his signature event, and Norway took the lead in overall medals. Here's a recap of Tuesday's action in Sochi:
An American skier continued to etch her place in Olympic history on Monday, and the Dutch rose to the top of the medal count. Here's a recap of the day's action in Sochi: