Mr Le Prou said he brought government social agencies together creating the Social Wellbeing Governance Group, which sits under the Northland Intersectoral Forum and includes police, Northland District Health Board, Ministry of Education, Child Youth and Family, Work and Income, Te Puni Kokiri and Haami Piripi, chairman of Te Rarawa and chairman of the Iwi Leaders Forum.
"As we were putting this together it became apparent that we had a spike of suicides, particularly youth suicide," he said
The group pushed for funding for Matatini, a play about suicide, which toured Northland schools and provided a catalyst for conversations about suicide and where to go for help.
Mr Le Prou said there had been some "stunning" results.
In 2012, when the group started focusing on youth suicide, there were 12 suicides in Northland .In 2014 there were four and so far this year there has been one.
Mr Le Prou said there had been a number of similar clusters of agencies working together to solve different issues including focusing on children, family violence and more.
He said there was more work to be done but Northland needed to keep the collaboration going.
"Youth suicide is down, crime is down slightly this year and while domestic disputes are up the serious family violence assaults are down and repeat family violence victimisation is trending down.
"We need to keep going the way we are and expand with more collaboration across the board."