Police are concerned for the safety of a missing Te Awamutu woman.

A Mangere man, 45, and his 7-year-old son had been missing since their aluminium dinghy tipped over under the old Mangere Bridge, sending a group of five into the water. Rescuers pulled three children to safety.

Police have grave concerns for a Christchurch mother and daughter whose disappearance they say is completely out of character.

There are growing concerns for the welfare of a mother and daughter who've gone missing in Christchurch.