A child's body has been found by police searching for a seven-year-old boy missing in Mexico for a month.

James Martin Camacho-Padilla, who has autism, disappeared from his grandmother's house in the Juarez area on Sunday January 21.

The youngster had arrived in the country from his home in Washington state a week earlier with his father and two siblings.

Dad Hugo Camacho-Padilla said he had left his son with his grandmother for 10 minutes when the boy vanished.

The seven-year-old suffers from autism (
Image:
Twitter/@AAMBER_mx)
A huge search was launched for the little boy (
Image:
AFP)

"That's when she called me to say she couldn't find him," Mr Camacho-Padilla told Univision Seattle .

The distraught dad said James doesn't speak much because of his autism and would probably have kept "walking and walking".

Police found a body on Tuesday (
Image:
AFP)
Forensic officers at the scene in Ciudad Juarez (
Image:
AFP)

Officers found a pair of the child’s shoes near the Rio Grande a day after the little boy vanished, Mexican newspaper El Mexicano reported.

The body of a child was removed from the scene (
Image:
AFP)
local authorities will conduct a DNA test to determine if it is that of little James (
Image:
AFP)

On Tuesday, police discovered the body of a child near the border in Ciudad Juarez.

Local authorities said they need to study the DNA to confirm if it is the body of missing James.