Hackers send fake terror alerts from NBC's Twitter

NBC says hackers briefly took over the NBC News Twitter feed and sent out false reports of a plane attack on the World Trade Center site.

The network calls Friday's hacking "reckless and irresponsible." It says it's working with Twitter to fix the problem.

Sunday is the 10th anniversary of the terror attacks of Sept. 11, 2001, when hijacked planes crashed into and destroyed the twin towers.