The police dive squad is expected to arrive in Taupo at lunchtime today to carry out a search for reports of a man disappearing while swimming in the Waikato River last night.
Police were told just before 9pm a man in the natural hot pools at Spa Park had swum into the main flow of the Waikato River, but did not get back to the river bank.
Senior Constable Barry Shepherd, of Taupo, said police, the Greenlea Rescue Helicopter, Coastguard Lake Taupo and Land Search and Rescue Taupo volunteers searched for the man last night but were unsuccessful and ended the search about 1am.
The police national dive squad will arrive to help today.
The identity of the missing man is not known, Mr Shepherd said.