Police have yet to find the people responsible for the death of John Sine Kaupa, the operations manager of Kuima Security Services, The National reports.
NCD metropolitan commander Supt Joseph Tondop said although a few suspects had been taken in for questioning, police were yet to establish whether they were the people who had killed Kaupa.
"Police have questioned two to three suspects believed to be part of the group and others are expected to be rounded up," Tondop said.
He said the Chimbu and Tari community living at 9-Mile lived in close contact and they should know the identities of the killers as the incident took place in daylight.
He said the NCDC law and order committee and police had arranged for a peace mediation meeting between the fighting factions at Jack Pidik Park at 10am today.
He said leaders from the Tari and Chimbu community would meet to talk and restore peace in the area.
Tondop said NCD Governor Powes Parkop, Moresby Northeast MP Andrew Mald and parliamentarians from Chimbu and Tari had been told of the meeting and were expected to address the leaders.
Tondop said ethnic clashes had become a national issue and police alone could not solve the problem.
He said tougher punishment must be issued to people involved in ethnic clashes of any sort, "so that others who are thinking of fighting will think twice".