A baby has been taken from a Hamilton property to Waikato Hospital in a serious to critical condition and police are investigating what happened at the property.
Emergency services were called to the property in Hamilton East shortly after 11:35am.
Waikato Field Crime Manager, Acting Detective Inspector Mark Greene said it was too early to speculate what happened at the address, but police were investigating.
"On arrival a baby, believed to be aged 8-9-months old was found to be in a serious to critical condition and was taken to Waikato Hospital by ambulance, accompanied by the baby's mother.
An ambulance spokesman said the baby was male and suffered head injuries.