TUCSON, Ariz. (AP) -- The bodies of four suspected illegal immigrants were found in the Arizona desert over the weekend.

The first discovery was made at about 9:30 a.m. Friday, when a U.S. Customs and Border Protection helicopter spotted skeletal remains on the Organ Pipe Cactus National Monument, said Richard DeWitt, a spokesman for the U.S. Border Patrol's busy Tucson sector.

He said neither the gender nor the identification of the person had yet been determined.

At about 2 p.m. the same day, agents found the body of a 24-year-old Mexican woman south of the village of Topawa on the Tohono O'odham Reservation. They found her body after a man told O'odham police that she had been left behind by a group of border crossers.

DeWitt said the woman had an identification card from Naucalpan, Mexico.

Later that night, agents found the body of a man in his 20s south of Cowlic, also on the O'odham reservation.

Agents learned of the body after three people found walking on a dirt road told an agent that someone from their group had died. The dead man had not been carrying identification.

The most recent body was found at about 12:30 p.m. Sunday. Agents found the body of a 42-year-old Mexican man near Kaka, also on the O'odham reservation.

Agents were led to the body by directions from an illegal immigrant who said he had left two people passed out in the desert. Agents never found the other person.

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Information from: Arizona Daily Star, http://www.azstarnet.com

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