Monis recently likened himself on his own webpage to Wikileaks founder Julian Assange, claiming the most recent charges against him have been laid for "political reasons".His website also carries a quote, posted earlier this month stating: "I used to be a Rafidi, but not any more. Now I am a Muslim, Alhamdu Lillah".
It has been Monis' on-going legal battle for his conviction for penning the poisonous letters to the families of dead Australian soldiers between 2007 and 2009 that has consumed him.
It is understood Monday's incident followed an unsuccessful, last-ditch attempt in the High Court on Friday to have the charges overturned.
Monis was sentenced to 300 hours of community service and placed on a two year good behaviour bond for the "offensive and deplorable letters" sent with the assistance of his girlfriend Amirah Droudis.
They were sent to the families of Private Luke Worsley and Lance Corporal Jason Marks, who were killed in Afghanistan in 2007 and 2008.
He also sent a letter in 2009 to the family of the Austrade official Craig Senger, who was killed in the bombing of the Marriott Hotel in Jakarta in 2007.
Monis claimed the letters were his own version of a "flower basket" or "condolence card".
Bree Till, widow of Sergeant Brett Till, killed while defusing a bomb on March 12, 2009, said at the time of his conviction: "We sat reading these letters (which) made out to be something supportive but then the juxtaposition of this man accusing my husband of being a child-killer while dictating how I should raise my children. It was scary," she said.
He fought the validity of the charges all the way to the High Court arguing they were political and only sought to persuade the families to oppose Australia's military involvement in Afghanistan.
But when he lost that battle, and had to stand trial, he pleaded guilty to all 12 charges against him in August 2013.
It is understood Monday's incident followed an unsuccessful, last-ditch attempted in the High Court on Friday to have the charges overturned.
'Covered in excrement'
Monis claimed he
suffered poor treatment while in prison, Manny Conditsis, a Sydney lawyer who represented Monis last year said.
"He was put through let's say some very unpleasant events, involving matters of excrement over himself and his cell," he said.
"This is a one-off random individual.
"It's not a concerted terrorism event or act.
"It's a damaged goods individual who's done something outrageous."
from the Melbourne Age