Police in Madang are continuing their investigations into the town street riots last month.
The protest march went awfully wrong and saw a life lost and properties worth thousands of kina damaged.
Police said their investigation is continuing including the investigation of the death of a primary school student.
Police say they are waiting for outside investigators to conduct an independent investigation to verify if the death of the student was caused by the police or outsiders.
It was alleged that a student was shot by police when they were trying to disperse the crowd.
Meanwhile, the three ring leaders, pastors who had arranged for a peaceful march and lead the protest, were released on court bail.