The U.S. Secret Service is investigating the compromise of the the Twitter account belonging to Fox News Politics, which was used to post a number of fake tweets reporting that President Obama had been assassinated, an agency spokesman told A hacking group known as The Script Kiddies, an offshoot of Anonymous, has claimed responsibility for the attack, according to reports. The fraudulent tweets, delivered to some 38,000 followers of @foxnewspolitics during the early morning hours EST on Monday, have since been removed from the feed. It is unclear how the hackers got access to the account.