The board took all complaints seriously and strongly encouraged people to speak to managers at the time of concern so it could be investigated at the earliest possible opportunity, she said.
"Northland DHB encourages parents and caregivers to stay with their children and subsequently our children's ward is an extremely busy, family centred environment.
"It is very disappointing that food goes missing, especially when parents and caregivers are there to care for and focus on their children, not worry about whether their food will be taken.''
A woman staying in Whangārei Hospital with her sick baby said she found a bag of methamphetamine on the floor of the children's ward corridor. She handed the Class A drug in to security services and laid a formal complaint with the hospital's management, her partner said.
Allan Trow said the incident happened at the weekend and had upset him and his partner.
"Kids run up and down those wards. What if one of them picked up that bag up and swallowed its contents? It could kill them.
"What kind of people take P into a children's ward in a hospital?"