Wellington's Backbencher Is On Fire Again!

Wellington's Backbencher is on fire again! Just as it was recovering from the previous fire which caused plenty of damage to the iconic Wellington pub. I wonder what caused it? 

Thanks

 http://twitter.yfrog.com/klrnkbxqj

https://twitter.com/ColeyTangerina/status/253318332810412032/photo/1/large