Police officers were on the ground carrying out inquiries and searching the area.
The Waikato police were also using social media to spread the word of Aaron's disappearance.
Aaron Whinn, 8, was wearing this jumper when he went missing. Photo / NZ PoliceA Facebook post about the boy's disappearance was shared almost 4000 times by members of the public in just under an hour.
"Hope he's found soon. Every parent's worst nightmare,'' one person wrote.
"Pray he is okay,'' another said.
Aaron Whinn, 8, was last seen on Hockin Place, Fairfield, in Hamilton about 6pm tonight. Image / Google.