A series of private pictures of Facebook founder Mark Zuckerberg have been posted online by hackers to highlight a bug in the social network. In total 14 pictures of Mr Zuckerberg were posted to image site Imgur under the headline: Its time to fix those security flaws Facebook . The bug related to tools designed to allow users to report inappropriate images. Facebook said that it had fixed the glitch. Earlier today, we discovered a bug in one of our reporting flows that allows people to report multiple instances of inappropriate content simultaneously, the firm said in a statement. The bug allowed anyone to view a limited number of another users most recently uploaded photos irrespective of the privacy settings for these photos. This was the result of one of our recent code pushes and was live for a limited period of time. Upon discovering the bug, we immediately disabled the system, and will only return functionality once we can confirm the bug has been fixed, the statement read. The BBC asked Facebooks permission before publishing the photographs of Mr Zuckerberg . The firm said that as the pictures were now in the public domain it would not be pursuing copyright infringement claims. The bug was discovered by members of a bodybuilding forum who went on to post step-by-step instructions on how to view private photos. When users reported a public profile picture of someone as inappropriate, they were invited by Facebook to view more of the persons pictures to look for similar content. The thumbnails shown to them were easy to enlarge and download. BBC