This is pretty shocking really - BB Africa HMs (and they're "All Stars" too) kicked off due to a lack of food and BB sent three security guys into try and calm the situation - only the HMs then took them hostage and refused to let them leave until BB guaranteed their food supply.
http://www.newstime.co.za/Lifestyle/..._rampage/8209/
http://www.bellanaija.com/2010/07/26...-with-daggers/
Unfortunately BB relented and gave them what they wanted seemingly without consequence.