A Senate committee will investigate how Attorney-General George Brandis and his department dealt with a letter from Sydney siege gunman Man Haron Monis.
Monis and two hostages died in the Lindt cafe in Sydney's Martin Place after a 17-hour siege last December.
The Attorney-General's Department told an estimates hearing this month a letter received from Monis on October 7, 2014 had been referred to a top-level joint review of the siege.
But three days later, Foreign Minister Julie Bishop revealed the letter had not been handed over because of an "administrative error".
The Senate inquiry, to report back on June 25, will look at what changes were made to the way correspondence to government is handled after the national terror alert level was raised to high in September.
It will also look into why the letter was not passed on to an internal inquiry into the Sydney siege and how incorrect evidence about this was given to a Senate estimates hearing.
Share
