Hackers apparently broke into at least two of North Korea's government-run websites on Thursday, as tensions rose on the Korean Peninsula.

The North's Uriminzokkiri Twitter and Flickr accounts stopped sending out content typical of that posted by the regime in Pyongyang, such as photos of North's leader Kim Jong Un meeting with military officials.

Instead, a picture posted on Thursday on the North's Flickr site shows Kim's face with a pig-like snout and a drawing of Mickey Mouse on his chest. Underneath, the text reads: "Threatening world peace with ICBMs and Nuclear weapons/Wasting money while his people starve to death."

Another posting says "We are Anonymous" in white letters against a black background. Anonymous is a name of a hacker activist group. A statement purporting to come from the attackers and widely circulated online said that they had compromised 15,000 user records hosted on Uriminzokkiri.com and other websites. The authenticity of the statement couldn't be confirmed, but the North's official website did not open on Thursday.