The latest antics targeted NBC, several government agencies and the White House.

While most of the nation will be commemorating in solemn and respectful ceremonies the 10th anniversary of the attacks on Washington and New York, hackers aren't giving authorities a rest.

On Friday, a hacker group that specializes in targeting large media outlets hijacked the NBC News Twitter account and posted bogus messages about an attack on "Ground Zero" in New York. It posted several messages saying there had been a plane crash at the site after a suspected hijacking.

Finally, the hackers decided to pull off the mask on their subterfuge and crowed, "NBCNEWS hacked by The Script Kiddies."

An NBC executeve monitoring the Twitter account saw the bogus messages and alerted Twitter, which quickly suspended the account. The FBI is investigating the incident, MSNBC .