Lae police yesterday arrested three suspects involved in the killing of a first year student at the Papua New Guinea University of Technology (Unitech).
The three were among a group of Engan students who were on their way to Enga via bus early on Tuesday morning.
They were intercepted by police near the 9 Mile area and were escorted back to the Lae Central Police Station.
Lae Metropolitan Commander, Chief Superintendent Anthony Wagambie, says the other students in the group were cleared and allowed to travel onwards.
For security reasons, police escorted the rest of the Engan students along the Highway to Goroka.
The five buses were brought to Lae and the students held at the station while an eyewitness identified the suspects.
Many of the students, not aware of the events that had happened, had fled the campus out of fear.
Wagambie said by Tuesday evening all three suspects were processed and charges laid.
The Lae Metropolitan Commander is calling on eyewitnesses to come forward to assist police in order to fast track the investigation.
He said the earlier incident involving a second year student who was slashed and admitted to a private hospital was taking too long to investigate, as no witness were willing to come forward and give statements.