The search for a toddler missing since Saturday has so far yielded no results.
Emile, 2, went missing from his grandparents’ garden in the French Alps.
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Police have no clues as to what could have happened to him, French authorities said on Tuesday.
Emile was last seen walking down the street near his grandparents’ house — located in a remote mountain outpost with only two dozen inhabitants — by two witnesses on Saturday afternoon, a prosecutor said.
Police and gendarmes have entered every building of the settlement.
Some 500 volunteers have also helped with the search, looking for Emile in the forests and fields that surround the village, the local prefect’s office said on Twitter.
“At this point, we don’t have any clues allowing us to follow any particular theory (on his whereabouts),” the local public prosecutor told Franceinfo radio.
French authorities at the weekend opened a telephone hotline and released a photograph of the boy, showing his with a yellow flower tucked behind his ear.
A recorded voice message by Emilie’s mother is being broadcast over loudspeakers from a helicopter in the search area, BFM TV said.
The boy went missing while his grandparents were preparing a car for a drive, French media has reported.
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