Court documents show police allege the 26-year-old provided transport to a suspect in the shooting after Texas Doctor was repeatedly shot in his car on Saturday night.
No one has been charged with his murder and it’s understood police are still hunting for people in relation to the killing.
Court documents state he lives in the Pt England area of East Auckland.
Allan said a vehicle had also been seized and will form part of the investigation.
“The team are continuing to make progress and are focused on locating the person responsible and holding them to account.”
Doctor, 22, was found dead in a car on Penrose Rd after police responded to reports of gunshots being heard about 10.40pm on Saturday.
The Herald revealed yesterday Doctor was a Rebels MC member whose father joined the gang to protect his family amid a bitter and violent neighbourhood feud.
His body has now been released to his family for funeral preparations.
Detective Senior Sergeant Ash Matthews earlier said police had spoken to “a number” of witnesses.
“While it is early in the investigation, there are indications that the parties involved were known to one another.”
A nearby shop owner said he and his partner closed their store at 10.30pm and headed to bed.
About 10 minutes later they heard loud voices on the street and a sound “like a firecracker”.
They were unaware of the murder until yesterday morning when police stopped them opening their shop.
The people on the street appeared to be arguing, said the shop owner, who declined to give his name.
“There were two of the firecracker sounds - so that must have been two [gun]shots.
“We had no idea,” he added. “There is not usually much trouble here.”
Allan said police continue to have a high presence in east Auckland.
Police want anyone who was in the area or has information, who has not yet spoken to police, to get in touch by calling 105 and quoting file number 240714/0428.