Police have released the name of the baby boy at the centre of a Tauranga homicide inquiry.

Three-month-old Richard Royal Arif Tekakahi Winiata Uddin died in Tauranga Hospital on Tuesday.

Police launched a homicide inquiry into his death the next day.

Inquiry head Detective Senior Sergeant Greg Turner told the Bay of Plenty Times Weekend that a post mortem to establish the cause of the baby's death was carried out on Thursday.

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"But the results won't be released at this stage and enquiries are ongoing," he said.

Mr Turner said the homicide inquiry was an active investigation and police were still in the information-gathering phase of the inquiry.

"We are keen to talk to anyone who has had any interaction with the family and the other occupants who live at the rented 19th Avenue address," he said.

"We are also interested in speaking to anyone who has information about activities at the scene address during the day and into the evening of June 7."

The boy died in Tauranga Hospital on June 7 after he was taken there by his mother.

Mr Turner declined to say how soon the boy died after he arrived at the hospital.

He would also not be drawn on the baby's condition when he was admitted to hospital.

Mr Turner declined to say whether police had a person of interest in the homicide inquiry.

"It's too early to comment on that or discuss any potential charges.

"We still have up to 10 days of solid enquiries to complete before we make any decisions," he said.

Anyone with information who can assist police with this inquiry should phone Tauranga police station on 577 4300 or call the Crimestoppers line anonymously on 0800 555 111.