A funeral was due to be held for the baby girl that died in Hawera in unexplained circumstances on Tuesday.
Janice Anne Shona Te Aroha Revell was 7-weeks-old when she died at a home in the south Taranaki town.
A post-mortem examination carried out at Palmerston North Hospital was "inconclusive", police said.
Earlier reports that an object in the home may have fallen on the baby were incorrect, a police spokesman said today.
A funeral was expected to be held this weekend and investigations would continue next week, police said.