"We call on the Bangladeshi authorities and the UN Refugee Agency to work together to ensure the protection of people in the camps, including refugees, civil society activists and humanitarian workers from both the Rohingya and host community, many of whom have shared concerns about their safety," said Hammadi.
Violence in the refugee camps in Cox's Bazar has been a growing problem, he observed.
He said "Armed groups operating drug cartels have killed people and held hostages. The authorities must take immediate action to prevent further bloodshed."
Mohib Ullah had represented the Rohingya community at the United Nations Human Rights Council in 2019.
Mohib Ullah was a leading representative of the Rohingya community, who spoke out against violence in the camps and in support of the human rights and protection of refugees, said AI.
He also had campaigned for a safe and sustainable repatriation of more than 1.2 million Rohingyas who fled to Bangladesh in 2017 to escape killings, rape and arson by Myanmar military regime.