The Wellington region has been rocked by six homicides in the past six weeks.

Among the dead are a man with gang links and two young men killed in Kapiti car parks - but police say residents have no cause for alarm.

"Police have resolved four of these, with the alleged offenders in custody and before the court," Wellington district commander Mike Rusbatch said.

Police are investigating the death of Lower Hutt man Michael Mulholland, who died in Lower Hutt on Thursday.

"Although any death is one too many, the number of homicide-related offences has been reducing over the last five years. We acknowledge deaths through needless violence are particularly tragic for families and friends of victims," Mr Rusbatch said.

Police were focused on ensuring people were safe and felt safe, he said.

Initiatives, including alcohol harm reduction, targeted intelligence and deploying staff where and when they were needed most, were cutting crime across the district.

Homicides in Wellington district, 2012:

Aaron Hadfield: Mr Hadfield, 27, was stabbed to death in the front seat of his car in Logie St, Stokes Valley, on January 26. A 20-year-old man will face trial in November on a charge of murdering Mr Hadfield.

Izak Millanta: Izak Millanta, 17, was fatally beaten in the Coastlands carpark, five weeks before the death of Sean Strongman-Lintern. Izak died in hospital on August 12. A man faces a manslaughter charge.

Mary Donnelly: She was found dead in her Ebdentown St flat by family members on August 30. The 38-year-old had an intellectual disability and was living independently with support from family members and a carer. A 28-year-old man appeared in Upper Hutt District Court charged with murder.

Baby in Taita: The dead infant was found at the back of a Taita Drive property on September 10. The woman charged with the murder of her baby girl is alleged to have committed the act two days earlier.

Sean Strongman-Lintern: Sean Strongman-Lintern, 20, was fatally stabbed on Saturday in Kapiti Lights car park. A 24-year-old labourer from Waitangirua, has been charged with Mr Strongman-Lintern's murder.

Michael James Mulholland: Mr Mulholland, 52, who had gang links, died in a Lower Hutt driveway on Thursday night after suffering facial wounds. Police are investigating.

- © Fairfax NZ News