A sheriff's deputy in central Arizona was shot Friday afternoon by a member of an alleged group of illegal immigrants, authorities said.

The Pinal County deputy, who was not immediately identified, contacted authorities after being wounded in a remote area, said Lt. Tammy Villar, a sheriff's spokeswoman. She said authorities believe he was shot with a AK-47. The deputy was being treated for the wound, but his condition was not immediately known, Villar said.

Pinal County is located between Phoenix and Tuscon and has been described as a key transit point for illegal immigrants. Sheriff Paul Babeu told CNN that an estimated 80 percent of illegal immigrants eventually pass through his county along the way to other locations.

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