Law enforcement and volunteers are resuming the search for a 10-year-old boy in Waukesha.

Andrew Ounkham, who is autistic, was last seen running into a large cornfield behind his home in a southwest Waukesha neighborhood about 4 p.m. Sunday.

Dozens of volunteers helped authorities search Sunday. Dogs, drone operators and a National Guard helicopter are being used in the search.

Volunteers gathered at 6 a.m. Monday at Waukesha West High School where they were given search assignments. A mobile command post has been set up at Rivers Crossing Park.

The search is similar to one in Langlade County. A 3-year-old boy wandered into a cornfield near Antigo Saturday afternoon and was found safe nearly 24 hours later. Volunteers also helped in that search.