Well, that's a surprise!

Hike in prison violence after no-smoke rule

 A Wanganui woman with contacts in Whanganui Prison says that since the facility went non-smoking there has been an increase in standover tactics, tension and violence.

http://www.nzherald.co.nz/nz/news/article.cfm?c_id=1&objectid=10748188&ref=rss