Mr Jonakait was found about 9pm Monday.
Senior Sergeant Rob Van Kalken said there was an indication Mr Munro had taken off his boots, Radio NZ reported.
He said police hoped Mr Munro would keep walking in search of food or shelter.
About 30 police and civilians have resumed searching today.
IHC communications manager Philippa Sellens told NZPA the pair were on an organised outing which included a picnic and bush walk.
The organisation had started an inquiry into how they had gone missing but the primary focus was on finding Mr Munro, who she said had an intellectual disability but was mobile.
Mr Munro is a male Caucasian with grey hair and glasses who was wearing red tracksuit pants and a top.
- NZPA