A 35-year-old man has been arrested after a statue of Lord Ernest Rutherford was stolen from a memorial site in Brightwater, near Nelson, on Friday.
The statue has been recovered after a local police officer, Constable Jamie White, jumped into the flooding Wai-iti River after a man who was evading arrest.
A police spokesperson said a 35-year-old man was arrested and charged in relation to the theft, while the statue has been returned to the memorial site.
"Lord Ernest Rutherford is one of our most highly regarded New Zealanders and a great scientist of the 20th century.