Authorities have said that a 2-year-old Arizona boy was found dead on Wednesday, the second day after he disappeared.

The Yavapai County Sheriff's Office said the area where Emmett Trapp's body was found by search-and-rescue teams was being treated as a crime scene, Tucson's KVOA-TV has reported.

The TV station said that the Dewey-Humboldt boy's mother had called authorities Monday night to report him missing. She said she had been home with her four children and he was gone when she woke up from a nap.

It appeared the boy may have wandered off with the family dog, which returned when called, KVOA-TV further added.

The boy's body was found about a mile from his home, said Phoenix radio station KTAR.

Yavapai County Sheriff's Office spokesman Dwight D'Evelyn said, "Our searchers are heartbroken, as you can imagine. We had hoped to find him alive, but that was not the case."

Investigators were trying to determine "exactly what happened to Emmett and how he died at this particular location," he further revealed.

According to KTAR, the sheriff's office said there were no known links between Emmett's death and the case of another 2-year-old boy, Sylar Newton, who was last seen the night of July 24 at a campground near Rimrock, about 40 miles away, where he was staying with his family. (With Inputs from Agencies)