Police investigating the murder of taxi driver Hiren Mohini have released CCTV footage of a person investigators want to identify and speak with. The person was walking along Queen St about 1am on January 31. Photo by NZPA/NZ Police.

Police have released photos of a man they want to speak to in connection with the brutal murder of a taxi driver in Auckland early Sunday morning.

Hiren Mohini (39) was killed in a frenzied attack, which ended in a car crash in the Auckland suburb of Mt Eden.

Police area searching for a man, believed to be the driver's last fare, who was seen running from the scene as Mr Mohini lay dying from multiple stab wounds.

A man had been spotted on CCTV footage walking along Queen St about 1am, shortly before Mr Mohini collected his last passenger, Detective Senior Sergeant Hywel Jones, the officer in charge of the investigation, said today.

The man appeared to be carrying a bag similar to the blue tubular-shaped recovered from a Mt Eden property on Monday night.

"This bag has blood on it, was found in the neighbourhood and it's possible that the man pictured was carrying it," Mr Jones said.

Police said yesterday Mr Mohini may have died for the $15.20 fare it would have cost the killer to have travelled from the central city to Mr Eden because there was no sign he had been robbed.

A funeral service was held yesterday for the father-of-two at Waikumete Cemetery in Waitakere.

A hearse carrying Mr Mohini's body was followed by a cavalcade of 300 taxis, most flying black flags from their radio aerials as a mark of respect.

His family described Mr Mohin's murder as an "unimaginable and incomprehensible event" and his killer as "barbaric".