Wreckage scattered across a green hillside south of Mexico City.
This is the site of a helicopter crash last week that killed Mexican Interior Minister Francisco Blake and seven others on board.
Mexican officials are touring the accident site - hoping to find clues as to what caused the tragedy.
Conditions were cloudy when the helicopter went down -- and one official says the pilot didn't know he was about to crash.
(SOUNDBITE) (Spanish) GILBERTO LOPEZ MEYER, THE MINISTRY'S HEAD OFFICIAL FOR AIRPORTS AND AUZILIARY SERVICES, SAYING:
"There is no indication the pilot tried to avoid hitting the ground. The pilot did not know he was about to hit land, we presume because no pilot would have continued flying. We presume the visibility was zero or nearly zero."
Blake is the second interior minister under President Felipe Calderon to be killed in an air crash.
Another top official also died in a helicopter crash in 2005.
Travis Brecher, Reuters
