Arthur Brown approached by three men before being shot dead in Auckland's Māngere

More details have been released on the homicide investigation into the death of Arthur Brown, who was shot dead in Māngere, Auckland earlier on Sunday.

Detective Inspector Tofilau Faa Vaaelua says Mr Brown was shot dead by a group of three men while waiting for a friend to pick him up from shops on Vine Street just before 1am on March 10.

"Three people approached him on foot and shot him twice in a senseless act of violence that left a newborn baby without a father," Inspector Vaaelua said in a press conference this afternoon.

Mr Brown was shot with some form of shotgun, once in the neck and collarbone on his left side and once on his right rear back, according to police.

Social media reports have linked Mr Brown to the Bloods gang Inspector Vaaelua said, however police could not confirm this.

He called on those who know anything about the shooting to come forward with information, and said the people responsible need to "man up" and hand themselves into police.

The three alleged offenders were caught on CCTV and seen by eyewitnesses.

Anyone with information about the incident is urged to contact Counties Manukau Police on 09 261 1321, or anonymously via Crimestoppers on 0800 555 111.

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Three men were allegedly involved and Mr Brown was shot twice. Source: 1 NEWS