Police figures show there were 278,644 "total victimisations" in the 12 months to November 30, up 7.1 per cent on the year before.

Current tensions between gangs are seen as a result of growth and younger members joining gangs.

Bay of Plenty District Commander Superintendent Andy McGregor said police staff involved have been deeply affected by this incident.

East Coast police say they're concerned at the number of weapons they're finding while investigating gang-related shootings in Ruatoria and Taradale.

A man who tried to shoot at police and was prevented from firing by the gun's safety catch has been sentenced to three years in jail.

Armed police will descend on Hawke's Bay and East Coast streets after escalating gang violence.