GILBERT, Ariz. -- An illegal immigrant was arrested after using the identity of a retired peace officer to gain employment, Maricopa County Sheriff's deputies said.

Edgardo Alvarado-Navarro, 29, was arrested late Friday at his workplace, Roberts Tire Shop in Gilbert, deputies said. He was taken into custody wearing a uniform shirt with his victim's name patch on it, according to deputies.

His arrest came after the officer called the sheriff's illegal immigration hotline to report an identity theft, sheriff's investigators said.

During the investigation, Alvarado admitted using his victim's identity to gain employment, deputies said.

Alvarado was booked into Maricopa County Jail for identity theft and forgery, class four felony charges.

It was the seventh arrest involving five seperate investigations into alleged violations of the Arizona Employers Sanctions Law, Sheriff Joe Arpaio said.