As put by Senior Sergeant Hamish Keer-Keer:
A search operation has been launched for a man in Lake Tekapo overnight.
Emergency services were called about 8pm after reports that a man had entered the water and failed to resurface.
Police search and rescue staff, along with Coastguard Mackenzie Lakes volunteers, Fire and Emergency New Zealand, and a helicopter, all deployed and conducted a search.
Sadly, the man has not been located.
The search will resume this morning.
/NZ Police Public Release. View in full here.