KEENESBURG, Colo. (AP) — Rescuers have recovered six bodies from a dairy on the Colorado plains and are investigating whether they were killed by exposure to gas in a confined space, authorities said Thursday.

The dead are all male and Hispanic, said Jolene Weiner, chief deputy coroner for Weld County. Their identities were being withheld pending notification of the families.

“We are investigating these deaths as the possible consequence of gas exposure in a confined space.” said Weiner. Autopsies are planned and investigators are looking into what kind of gases may have resulted in death.

The dairy, Prospect Valley Dairy, is located along a rural road near Keenesburg, about 35 miles (55 kilometres) northeast of Denver.

Rescue crews entered a confined space at the dairy Wednesday and r

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