asked the Minister representing the Minister for Immigration and Citizenship, upon notice, on 30 May 2011:

(1) Since 1 January 2008, for each centre:

(a) what incidents of violence have there been;

(b) on what date did they occur; and

(c) what injuries were suffered by:

  (i) detention centre staff, and

  (ii) other detainees

(2) Were the perpetrators of the violence identified; if so what action, if any was taken against them