The accused is due to appear in court today.
A 10-month-old baby seriously injured in Hokitika yesterday has died.
A 30-year-old man arrested yesterday has now been charged with murder, says police spokesperson.
"He is due to appear in Christchurch District Court this afternoon.
"Police are providing support to the baby’s family, who have requested privacy at this difficult time."
As the matter is before the court, no further information is available at this time.