The entrance to the college hall was bombarded with flowers, notes, donations and messages, which were scribbled on canvases while the increase in police presence was known as more than 10 officers stood guard.
The overcrowded hall had people standing in the isles and outside while others watched the service in a second room as it was livestreamed.
Emotions of gratitude, love, pain and suffering could be seen in the sea of people as some hugged, kissed each other or wiped tears from their faces during the service.
Ms Palaszczuk offered her deepest sympathies for those who tragically lost their lives in the lead up to the service.
“Today cabinet ministers, myself, Imams and the Islamic community of Queensland stand shoulder-to-shoulder showing everyone across our great state, across Australia and to our friends in New Zealand that we are united in our grief and we are united to stamp out all acts of terror,” she said.
Islamic Council of Queensland spokesman Ali Kadri said it was important to note the attack did not “take place in a vacuum” and erupt out of thin air.
“For a long period of time a lot of Muslims have been feeling alienated and marginalised and mainly because of the rhetoric from some within the political organisations,” he said.
“The hate was building up for a lot of years … we have seen yesterday and the day before yesterday despite such a tragic loss of life some were ready to blame the victims instead of the perpetrator.”
Mr Kadri said the support from the outside community was paramount.
“It is very important that the Muslim community gets the message from the rest of the community that we are part of this community, we are part of this nation, we belong to this country as much as anybody else,” he said.
“That is why it is so important especially for those who were born, bred and brought up in this country.”
Queensland Council of Imams president Imam Uzair Akbar said the community experiencing pain and grief and in need of support but urged it to be patient and tolerant.
“For those people who are angry, that are upset I would like to say that hate cannot be defeated by hate, intolerance cannot be defeated by intolerance and violence cannot be defeated by violence,” he said.
Islamic Council of Queensland president Habib Jamal said he was shocked at the “remarkable display of compassion” seen across the nation and was surprised by the turnout at the service.
“This is overwhelming, we did not expect this but as I said when you see the turnout here today, it is absolutely amazing,” he said.
“There is unity in diversity and we as human beings have to support one another, love one another and try and work together for the best of Australia.”
The prayer service included the recitation of the Kurahn, a welcome to country, a multi-faith prayer and a performance of Haka from the Maori community.
The hashtag #standtogether was also created to show the support among multi-faith and multicultural communities in unison.
Jocelyn Garcia is a journalist at the Brisbane Times, covering breaking news.