The Malaysian Consultative Council for Islamic Organization (Mapim) together with UK-based Islamic Human Rights Commission (IHRC) will be filing a suit against Myanmar at the International Criminal Court (ICC) for genocide and crimes against humanity, over the Rohingya crisis.

Mapim president Mohd Azmi Abdul Hamid said the suit will be filed as soon as evidence, including photographs, of the atrocities are compiled into a report which meets the standards required by the ICC.

"We are doing this (collecting evidence). If we have two or three big cases then we will meet IHRC and together we will go to (the Hague) to file against Myanmar what we deem to be genocide," Mohd Azmi was quoted as saying by Utusan Malaysia today.

Speaking after a pro-Rohingya rally in Ipoh, he also urged Malaysia to use its position in the UN Security Council to get UN peacekeepers deployed to Myanmar.

Besides calling for Myanmar's membership in Asean to be reconsidered, Mohd Azmi said economic sanctions and boycotts should also be mulled should the killings of Rohingya's in Rakhine state continue.

In recent weeks, there have been increasing reports on Myanmar's military allegedly pursuing the Rohingya community in the Rakhine state which borders Bangladesh.

The military, however, claim the violence against the Rohingya community is perpetrated by local militants.

Myanmar does not recognise the Rohingya community, who are mostly Muslim, as citizens.

Malaysia has strongly condemened the killings, and Prime Minister Najib Abdul Razak today joined forces with PAS president Abdul Hadi Awang at a rally to show solidarity with the Rohingyas.

Myanmar has responded by telling Malaysia to back off, citing the non-interference agreement under the Asean charter.

Najib, who attended a pro-Rohingya rally alongside PAS in Kuala Lumpur today, said this was no longer an issue of interference, but a humanitarian crisis.