(CBSNewYork/AP) — Newsweek’s Twitter feed was briefly hacked Tuesday morning, purportedly by a group associated with the Islamic State.

Several posts to Newsweek’s feed referenced Cyber Caliphate, a hacker group affiliated with the Islamic State, which claimed responsibility for the hacking.

The posts, which began shortly before 11 a.m. Eastern, included a message targeting President Barack Obama, the first lady and their daughters.

The posts also showed pictures of apparent Pentagon-related documents. The posts were erased about 10 minutes later.

Newsweek owner International Business Times confirms that the account was hacked and said it has has regained control of the feed.

“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,” IBT Media said in an emailed statement.

Newsweek has 2.51 million followers on Twitter.

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