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U.S. first lady Michelle Obama participates in a discussion on childhood obesity with Newsweek's editor Jon Meacham at the Newseum in Washington March 17, 2010. REUTERS/Larry Downing

CyberCaliphate has apparently hacked several Twitter accounts on Tuesday. The group claims to have ties to Islamic State.

The major accounts the hacking group appears to have hacked include those of Newsweek and Military Spouses of Strength, a U.S. veterans’ group. The organisation which seems to be responsible for the hack earlier hacked U.S. Central Command’s Twitter account. The latest target of the hacking group, according to Newsweek, is IBTimes.com, the website of the International Business Times.

Newsweek Managing Editor Kira Bindrim, who had earlier issued a statement to confirm the hack, said that the company had been able to regain the control of the Twitter account. "We apologize to our readers for anything offensive that might have been sent from our account during that period, and are working to strengthen our newsroom security measures going forward," CNN quotes Bindrim.

CyberCaliphate threatened U.S. First Lady Michelle Obama in one of the tweets posted from hacked accounts. It also threatened U.S. President Barack Obama after it had hacked Newsweek’s Twitter account declaring "Je suIS IS." It threatened the U.S. First Lady that it was “watching” her, her girls and her husband. White House did not comment on the threat on the Obama family.

The hacking organisation also claimed hacking Pentagon social media accounts in January. ABC News reports that there was a head wrapped in a black-and-white scarf next to a banner proclaiming the hacking group’s name was also posted on the Twitter account after it had been hacked. According to White House spokesman Josh Earnest, the FBI started investigating the hack. However, the FBI did not make any comment.

Newsweek removed the group’s banner and tweets from its account as it took only 14 minutes to regain control of its Twitter account. Editor-in-chief Jim Impoco refused to give much important to the cyber-attack. He said that the group could get control of the company’s account only for a few minutes. He added that the company was working with Twitter so that such things would not happen again.

The term "Je suIS IS" refers to "Je suis Charlie," the phrase which was used in protest against the terror attack in Paris. A militant attack on satirical magazine Charlie Hebdo killed 12 people on Jan. 7.

Contact the writer: s.mukhopadhyay@IBTimes.com.au