CASA GRANDE, Ariz. (AP) — Pinal County sheriff's deputies say they've have arrested five suspected illegal immigrants who attempted to hide in a pile of cow manure.

A sheriff's deputy tried to stop a speeding vehicle Thursday morning in Casa Grande, but lost sight of it after a brief pursuit. The vehicle was later found abandoned and authorities say evidence found inside indicated it had been used to smuggle illegal immigrants.

Deputies tracked the vehicle's occupants to a dairy about two miles away, where they found a woman and four men that had tried to conceal themselves in cow manure. The five have been turned over to the Border Patrol.

They say the vehicle's alleged driver — 48-year-old Gerardo Garcia of Eloy — was found hiding in brush near the dairy. He's been booked into the Pinal County Adult Detention Center on a fraud warrant out of Maricopa County.

Copyright 2010 The Associated Press.