Police raid home of bitcoin 'founder'
According to yesterday's article about this in The Guardian, the Australian Federal Police released the following statement about the raid, stating that the raid was not related to any involvement that wright may (or may not) have had in inventing bitcoin:  

“The AFP can confirm it has conducted search warrants to assist the Australian Taxation Office at a residence in Gordon and a business premises in Ryde, Sydney. This matter is unrelated to recent media reporting regarding the digital currency bitcoin.” 

The article goes on to reference the Australian Tax Office's involvement in the raid, and a recent interview between the ATO and Wright which focused on Wright's bitcoin holdings.  Capital gains on the sales of appreciated bitcoins are subject to tax in Australia, so some are speculating the raid could be about back taxes that Wright may be subject to from his bitcoin holdings.