A homicide investigation is underway following the death of a man in Ponsonby on Sunday evening.

Detective Senior Sergeant Craig Bolton of Auckland City CIB revealed that emergency services responded to reports of a gunshot fired outside an address on Ponsonby Road at around 10.18pm.

"Upon arrival at the scene, a man was found deceased," Detective Senior Sergeant Bolton said. "Our investigation is in its early stages as we work to determine the exact circumstances surrounding this incident."

The local community can expect to see a heightened police presence today, Detective Senior Sergeant Bolton advised.

"Road closures are currently in place on Ponsonby Road between Franklin and Richmond Roads," he explained.

"Police are assisting with traffic management, and a scene guard has been established that will remain throughout the day as our inquiries progress."

The search for the person responsible for the shooting continues.

"Police have spoken to a number of witnesses who were in the vicinity at the time of the incident," Detective Senior Sergeant Bolton said.

"While no arrests have been made at this stage, detectives are actively pursuing all leads."

Information from the public is crucial to the investigation.

A post-mortem examination and formal identification of the victim are expected to take place in the coming days.

"Police urge anyone who was in the area or has information that may be helpful to come forward, even if they haven't spoken to us yet," Detective Senior Sergeant Bolton concluded.

Anyone with information can contact the police via the 105 phone service or online at https://www.police.govt.nz/use-105, referencing file number 240506/9353.

Information can also be provided anonymously via Crime Stoppers on 0800 555 111.