Refugee activists will hold a vigil outside the Federal Immigration Minister Peter Dutton's office north of Brisbane on Thursday to express their outrage over the death of man on Manus Island last week.
The 52-year-old man, Salim, died after jumping from a moving car on the island following five years in custody at the facility.
Noor Zaman, president of the Queensland Rohingya Community, said Salim had been brought to Australia in 2014 for treatment for severe epilepsy but he was returned to the island soon after without the condition being brought under control, and he suffered frequent seizures.
"Salim's death was not suicide, it was murder under the leadership of Peter Dutton and Malcolm Turnbull," Mr Zaman said.
He is the seventh Rohingya refugee to die on the island and the third apparent suicide at the centre in less than a year.
Mark Gillespie from the Refugee Action Collective said Mr Dutton and the federal government needed to take responsibility.
"Salim fled genocide in Myanmar and was found to be a refugee and owed protection, but instead of safety he was condemned to five years of hell in an offshore detention centre."
Readers seeking support and information about suicide prevention can contact Lifeline on 13 11 14 or Suicide Call Back Service on 1300 659 467, or Mental Health in Multicultural Australia www.mhima.org.au.