Burma will refuse entry to members of a United Nations probe focusing on allegations of killings, rape and torture by security forces against Rohingya Muslims, an official said on Friday.

Tensions high after a recent spate of killings. Arakanese Buddhists fear fresh attacks by Rohingya insurgents.

Attacks on civilians in northern Arakan State continued over the weekend, according to the Office of the State Counsellor, which described the assailants as “terrorists” in three violent incidents that saw four people killed, including a village administrator.

Two madrassas forced closed by Buddhist nationalists in late April remain shuttered, with human rights monitors say the incident shows how Burma’s 14-month-old administration is struggling to tackle discrimination against Muslims

Phyo Min Thein pledges to crack down on instigators of religious conflict, vowing that his government will take action against those stoking tensions following recent altercations involving Buddhists and Muslims in Rangoon.

Authorities have begun the process of shuttering IDP camps in Arakan State, but rights advocates worry that initial efforts don't bode well for a larger-scale relocation of the state's Muslim minority.