Police confirmed two hostages and a gunman were shot dead after a 16-hour siege at the Lindt Chocolate Cafe in Sydney's CBD.
The tragedy has seen an outpouring of tributes for the victims, with many people laying flowers outside the cafe.
Silma Ihram from the Australian Muslim Womens Association prayed for the victims after she placed flowers this morning.
"We're all shocked and we're deeply saddened," she said.
"We hope that the Australian community can see that this is not something to do with us, the Muslim community, it's for somebody who was obviously suffering from a mental problem.
"He already had a history and all of us are trying to stand together with the rest of the Australian community in mourning what has happened here."
Ms Ihram was joined by Lydia Shelly from the Islamophobia Register, an organisation set up to report incidents of anti-Muslim attacks.
"Coming down here today was a very important personal choice to me, but it's also indicative of the overwhelming feelings coming from the Muslim community as well," Ms Shelly said.
"We wanted to pay our respects for the lives that have been lost and to pay our respects to those who were injured in the experience that they went through.
"I'm just incredibly sad ... every single other Australian today is feeling the exact same thing."
Ms Shelly said the focus today should be on the victims rather than a potential backlash against the Muslim community.
"Our overwhelming focus has been on those who have lost their lives and our thoughts and prayers and condolences go out to the family members," she said.
"I don't even feel like it's right to speak about any potential blowback on a day like this because obviously that's not our focus at all.
"I would hope that the overwhelming messages of support that we've received is indicative of Australians rising up, reaching out to each other, strengthening our bonds.
"We're not going to give into fear and mistrust of each other."
Ms Shelly has denied claims the man responsible for the attack, Man Haron Monis, was an Islamic cleric. She said he was a sick man who was not representative of Muslim Australia.
"This man was not an Islamic cleric at all," she said.
"He was a self styled sheik, that's the name that he gave himself. He was not known to preach in our mosques or anything like that.
"These are the actions of somebody who is incredibly sick and very disturbed. It is not a reflection on our sheiks, on our faith at all, on our community and I think the majority of Australians and the support that we've received understand that message."