The Police National Dive Squad have been called in after a man went missing while swimming at Omanawa Falls in the western Bay of Plenty.
The man disappeared while swimming with two others at the falls at about 4.15pm this afternoon.
Police Search and Rescue responded and were able to help two other people get out of the water.
The dive squad will assist with the search when they arrive in the area tomorrow.
Council staff are limiting access to the area overnight, before Search and Rescue resume their efforts in the morning.